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5PCS Countersink Drill Bit Set, Low Friction Depth Stop, 1/8 9/64" 5/32" Drill + 3/8” 82° Counter-Bore, 11/64" 3/16" Dri 5PCS COUNTERSINK DRILL BIT SET: 5PCS countersink drill bit set includes 1/8", 9/64", 5/32" drill bits matched with 3/8”Meichoon 
Meichoon Forstner Drill Bit Set 15-35mm 16 Pcs, Carbide Forstner Bits High Speed Steel Wood Tool Punching Bit Wood Slabs Advanced technology manufacturing and durable material - Made from Tungsten steel and being hot-treated, the blade is chBest Value DKIBBITH 
5-pc Countersink Drill Bit Set, 3in1 Woodworking Counterbore Hole Drill Bits for #6 8 10 12 16 Screws, Depth Adjustable Excellent Performance: Our countersink drill bit set is made of high-quality M2 HSS, designed for superior cutting powerGbtdoface 
Precise Reaming and Chamfering with HSS Counterbore Spiral Step Drill Bit 90 Degree (M5*90 Degree) 【Two-in-One Design】This HSS counterbore spiral step drill bit combines reaming and chamfering functions, greatly improviGyorwst 
Gyorwst 7Pcs M3-M12 Counterbore Milling Cutter High Speed Steel Pilot Slotting Tool End Mill Slot Drill Bit Set, Silver Aexit 
Aexit Wood (quality Parts) Working 13.4mm x 8.2mm x 10mm HSS M8 Counterbore (42ry258qf738) End Mill Product Name : Counterbore End Mill;Material : HSSQualoramall 
Qualoramall HSS Spiral Step Drill Bits 90°/180° Counterbore Spiral Step Drill Bit Countersink Counterbore Bit M3-M10 Hig 【Versatile Design】This spiral step drill bit is designed to have both reaming and chamfering functions, allowing for impMilescraft Milescraft 5341-4-Piece Counter Bit Set Countersink Counterbore Drill Bits Four piece set includes bits for drilling pilot holes for screw sizes No 6, No 8, No 10 and No 12OVAQUIXI OVAQUIXI Counterbore Bit Set Adjustable Depth Self Tapping Screw Counterbore Drill Bit with Hex Wrench [ADJUSTABLE DEPTH] Customize the depth to accommodate screws of varying lengths, ensuring precise and uniform countersinLYIYEYAN 6Pcs Alloy Countersink Drill Bit Set with Depth Stop, Spiral Edge Countersink Wood Drill Bit, Versatile Wear Resistant C Product Material: Our countersunk wood drill is made of alloy material, which has good cutting performance and wear resiGAGALU 1pc HSS Counterbore End Mill M3.2-M20 4 Flute Pilot Slotting Bit Counterbore Mill Milling Cutter for Wood/Metal Drilling 1. High toughness, high hardness, abrasion resistance.MYGMEDQVK(小さな店) HSS Counterbore End Mill,M3.2-M20 4 Flute Pilot Slotting Bit Counterbore Mill Milling Cutter for Wood/Metal Drilling(12. High toughness, high hardness, abrasion resistance.DNAMYJME DNAMYJME 6Pcs Alloy Countersink Drill Bit Set With Depth Stop Spiral Edge Countersink Wood Drill Bit Versatile Wear Resi Set Content: This countersunk drill set includes a limit counterbore drill, 4 different sizes of replacement drill bits:Mengshen Mengshen Co Step Drill Bit 4-32mm Spiral Groove, M35 HSS Multi Hole Cutting Enlarge Stainless Steel Plate Quenching Stee Much More hardness - M35 HSS is harder lot than HSS 4241, suit for drilling in stainless steel plate & quenching steel pSENNMONN SENNMONN M10X1.25 Thread Repair Kit with 14mm Insert HSS Drill, Tap, Counterbore,Installation Driver,Stainless Steel Ins Kit include Drill *1,counterbore *1, tap *1,install driver *1,M10x1.25x14mm inserts *10Make it Snappy Snappy Tools Flat Bottom Counterbore, 1/4 x 5/8 Inch Size Creates a clean, recessed area for flat-headed screwsDECKRKAT 5-pc Woodworking Countersink Counterbore Drill Bit Set 3in1 for #6 8 10 12 16 Screws, M2 Pilot Drill Bits Adjustable Dep 3in1 Countersink Drill Bit Set – Enable you to Drill, Countersink and Counterbore in one step, ideal woodworking tools fMeichoon Meichoon M35 Cobalt Step Bit Multi-Hole Drill, HSS Spiral Groove 6-24mm Spiral Flute Large Drill Multi-Hole Hex Shank Co M35 HSS & Cobalt - M35 High speed steel makes it last longer than others, cobalt ensures easily cut through steel sheetsuxcell uxcell HSS-AL Cobalt Counterbore End Mill Cap Screws Expand Holes 4 Flutes, 4 X 7.4mm for expanding general rough hole or hole processing for boltsMengshen Mengshen Cobalt Step Bit 6-24mm, M35 HSS Spiral Flute Large Drill Multi-Hole Hex Shank Counterbore Drilling Cutting Enla Much More hardness - M35 High speed steel makes it last longer than others, cobalt ensures easily cut through steel sheeSENNMONN SENNMONN M6X1.0 Thread Repair Kit with 9.4mm Insert HSS Drill, Tap, Installation Driver, Counterbore, Stainless Steel In Kit include: Drill *1, Tap *1, Install Driver *1, M6x1.0x9.4mm Inserts *10Mengshen Mengshen Drill 4-22mm, M35 HSS-Co Step Bit Spiral Groove Hex Shank Multi-functional Drilling Tool HSS Cobalt Counterbore Much More hardness - M35 HSS is harder lot than HSS 4241, suit for drilling in stainless steel plate & quenching steel pSENNMONN SENNMONN M14X1.5 Thread Repair Kit with Insert HSS Drill, Tap, Counterbore, Installation Driver,Tap Guides, Metric, 10PC KIT INCLUDES: Drill x1, Counterbore x1, Tap x1, Install Driver x 1, M14X1.5X 9.4MM Inserts x 10. with Custom EVA Box.Sluffs Sluffs Counterbore Drill Bits Set,Countersink Drill Bit Set,5-Flute End Mill Bits, 5pcs Countersink End Mill Cutter Slot 【 High-quality Material】: Made from high-speed steel-aluminum, these 4-flute countersink end mill cutter slot drill bitsSENNMONN SENNMONN M8X1.25 Metric Thread Repair Kit with Insert HSS Drill, Tap, Installation Driver, Counterbore, Two Sizes Stainl KIT INCLUDES: Drill x 1, Counterbore x 1, Tap x 1, Install driver x 1, M8X1.25X11.7MM Inserts x 5, M8X1.25X16.2MM InsertSENNMONN SENNMONN M12x1.25 Thread Repair Kit with Insert HSS Drill, Tap, Counterbore, Installation Driver, Metric, 10PCS Stainles KIT INCLUDES: Drill x1, Counterbore x1, Tap x1, Install Driver x 1, M12X1.25X15MM Inserts x10. with Custom EVA Box.SENNMONN SENNMONN M12X1.5X9.2MM Thread Repair Kit with Insert HSS Drill, Tap, Counterbore, Installation Driver, Metric, 10PCS Sta KIT INCLUDES: Drill x1, Counterbore x1, Tap x1, Install Driver x 1, M12X1.5X9.2MM Inserts x 10. with Custom EVA Box.11% Off FTG USA FTG USA Countersink Drill Bit Set 5 Pc Countersink Drill Bit #4, 6, 8, 10, 12, Tapered Drill Bits Secured with Pin to 1/ FTG 2337P has Countersink Bits Secured with Pin. Drill bits designed as reliable wood drill bit set. Countersink drill bNUZAMAS NUZAMAS 7pcs HSS Countersink Drill Bits Set Woodworking Reamer Chamfer Tool, 3-10mm Pre-Drill Counterbore Drill Bits Mad 7 piece set includes bits for drilling pilot holes for screw sizes 3mm, 4mm, 5mm, 6mm,7mm,8mm,10mm.Make it Snappy Snappy Tools Flat Bootom Counterbore, 1/8 x 3/8 Inch Size Ideal for woodworking projects where a clean and professional finish is desiredSENNMONN SENNMONN M11X2.0 Metric Thread Repair Kit with Insert HSS Drill, Tap, Installation Driver, Counterbore, Two Sizes Stainl KIT INCLUDES: Drill x 1, Counterbore x 1, Tap x 1, Install driver x 1, M11x2.0x16.2MM Inserts x 5, M11x2.0x28.2MM InsertSENNMONN SENNMONN M7x1.0X10MM Thread Repair Kit with Insert HSS Drill, Tap, Counterbore, Installation Driver, Metric, 10PCS Stain KIT INCLUDES: Drill x1, Counterbore x1, Tap x1, Install Driver x 1, M7x1.0X10MM Inserts x 10. with Custom EVA Box.Meichoon Meichoon M35 Cobalt Step Bit Multi-Hole Drill, Spiral Groove, 4-12mm Multi-Hole 9 Steps Sizes Hex Shank Counterbore Dril M35 HSS & Cobalt - M35 High speed steel makes it last longer than others, cobalt ensures easily cut through steel sheetsPOWLAB POWLAB 5pcs Counterbore Set High-Speed Steel M3-M8 4 Flutes HSS-AL Straight Shank Counterbore End Mills for Copper, Alum Mill cutters are made of hard high speed steel, usually used to be assembled on milling machine.Meichoon Meichoon Forstner Bit Set Wood Drill 15-35mm 5pcs Carbide Forstner Bits High Speed Steel Flat Wing Drilling Hole Hinge C Good Material - Made from tungsten steel and being hot-treated, the blade is characterized by high accuracy, smooth cuttMeichoon Meichoon Forstner Drill Bits 15-35mm 5 Pcs Set, Carbide Forstner Bits High Speed Steel Flat Wing Drilling Hole Hinge Cem High-speed steel woodworking hole saw open hole neat, smooth, no tremor can sharp cutting edge improves opening speed, eBriny River Briny River 60 Pieces M3 Aluminum Alloy Counterbore Washers 8x2mm Cup Shim Gaskets for RC FPV PC Drone Model The gasket is M3 size with an outer diameter of 8mm. The thickness is 2mm, and each weighs less than 1g, saving space.Auoeer 7pcs/Set Counterbore Set M3-M12 High-Speed Steel 4 Flutes Straight Shank Counterbore End Mills High speed steel, high quality and durable.SENNMONN SENNMONN M11X1.25X28.2MM Thread Repair Kit with Insert HSS Drill, Tap, Counterbore, Installation Driver, Metric, 10PCS S KIT INCLUDES: Drill x1, Counterbore x1, Tap x 1, Install Driver x 1, M11x1.25x28.2MM Inserts x 10. with Custom EVA Box.ZONADA ZONADA 7pcs in Set HSS Countersink Drill Bits Set Woodworking Reamer Chamfer Tool, 3-10mm Pre-Drill Counterbore Drill Bi Set of 7 ZONADA Wood Drill Bits. High carbon steel material. High hardness offers superior cutting power and durabilityMarhynchus Marhynchus Adjustable Counterbore, Steel Alloy Drill Bit Set, Efficient Counterbore Drill with Hex Key, for Drilling Rig [Versatile Application] Compatible with drilling rigs, bench drills, hand drills, and charging drills for diverse usage.Mengshen Mengshen Large M35 HSS Step Cone Drill Set 6-35mm, Cobalt Hex Shank Spiral Groove Large Pagoda Drill Hole Reamer Drillin Much More hardness M35 High Speed Steel - classic high speed steel with cobalt for proven capability and durability in dRCKCFDMDKK RCKCFDMDKK Piloted Counterbore Milling Cutter HSS Flat Bolt Hole Cap Screw Countersink Tool 4 Flutes Pilot(Bright Finish Designed for seamless integration with the machining center, these milling cutters can achieve efficient and precise proRespicefinem Respicefinem Counterbore Drill Bit Limit Alloy Steel Fast Chip Removal Countersink Drill Bit 3.5 X 10mm Limit Function: This counterbore drill bit features an limit that ensures precise drilling depth, over-piercing throughLMHHMIN LMHHMIN Counterbore Drill Bit Limit Adjustable Alloy Steel Fast Chip Removal Countersink Drill Bit 3.5 X 10mm LIMIT ADJUSTABLE: The drill bit's premium punching efficiency and ability not to pierce wall are both attributes of itsLocadence LOCADENCE Counterbore Drill Bit, 3.5 X 10mm Limit Adjustable Alloy Steel Wood Drill Countersink Counterbore, Fast Chip R LIMIT ADJUSTABLE: The drill bit's premium punching efficiency and ability not to pierce wall are both attributes of itsOrtsoon Ortsoon 5 Pcs Countersink Drill Bit Set, 1/8" 9/64" 5/32" Drill + 3/8" 82° Counter-Bore with Adjustable Bit Depth Stop f 【Woodworking Tools】Countersunk drill bit includes 5 HSS (high speed steel) M2 drill bits in sizes of 1/8-inch, 9/64-inchWilsnsun Counterbore Drill Bit,Counterbore Taper bit,Countersink bit, with Adjustable Low Friction Depth Stop,90°Countersink Angl (A°) Angle: 90°Generic 5PCS Drill Bit Set 15-35mm, Carbide Forstner Bits High Speed Steel Flat Wing Drilling Hole Hinge Cemented Carbide Carbon Good Material - Made from tungsten steel and being hot-treated, the blade is characterized by high accuracy, smooth cuttMozeyerh 5 Pcs Countersink Drill Bit Set with Low Friction Depth Stop, HSS M2 Bits Tapered Head1/8 9/64" 5/32" Drill+3/8” 82° Cou 5 Pcs Countersink Drill Bit Set with Low Friction Depth Stop, HSS M2 Bits Tapered Head1/8 9/64" 5/32" Drill+3/8” 82° CouTrayneel Trayneel Pipe Threader Drill Bit Kit with Triple Flute Counterbore for 1/2" and 3/4" Pipes Internal External NPT Threadi [TRIPLE FLUTE DRILL BIT SET] This set includes everything you need an internal tap, external die, counterbore drill bit,AKEqUNU 1pcs 45° CNC Chamfering Tool, SD SPK Internal/External Reversible Counterbore Cutter for Hole Machining(30mm) 45° CNC Chamfering Tool, SD SPK Internal/External Reversible Counterbore Cutter for Hole MachiningJiawu Jiawu Wood Counterbore Bit, Incisive Cutting 2.5x6MM Punching Sinking Drilling Countersink Drill Bit Set Carbide Materia Specification and Use: Tapered countersink drill bit set, with 2.5x6MM specificatio, suitable for convenient drilling ofSENNMONN SENNMONN M11X1.5 Metric Thread Repair Kit with Insert HSS Drill, Tap, Counterbore, Installation Driver, 10PCS Stainless KIT INCLUDES: Drill x1, Counterbore x1, Tap x1, Install Driver x 1, M11x1.5x30MM Inserts x10. with Custom EVA Box.Lagefefe [60PCS] M3 Counterbore Washers Color Pink, Anodized Aluminum Alloy, Head Washers Gaskets Cup Shim for Screw RC/FPV/PC/Dr Material:The surface uses electroplating technology, and the color is cool and shiny. Made of high-quality aluminum alloEosnow Eosnow Adjustable Countersink Bit, Counterbore Drill Bit Alloy Steel 4 Flute for Plywood Wide Application: This adjustable depth countersink drill bit has a wide range of applications and can be used for woodwGeneric Countersink Bit Set | Steel Tapered Woodworking Tools, Counterbore Wood Drill Bits - for Cabinet Furniture Home Repair D Enhanced Drilling Control: With its innovative sliding collar design, the Countersink Drill Bit Set delivers consistentRespicefinem Counterbore Drill Bit Fast Chip Removal Countersink Drill Bit Set Wood Plastic Soft Metal Limit Control: Features an limit design to the drill bit from piercing through materials like , offering precise depth cGeneric Countersink Drill Bit - Countersink Tapered Repair Tools - Counterbore Wood Drill Bits,for Cabinet Furniture Home Repair Perfect Countersinking: Designed for precision, the Countersink Drill Bit Set combines pilot hole drilling with a slidinTREND Trend Professional Counterbore Set - CB38-532TC - Drill 3.96mm; Drill Counterbore 9.5mm Tungsten Carbide Tipped Ideally suited for recessing bolt and screw heads. For use with plywood, particle boards and plastics (abrasive). TCT veTREND Trend Professional Counterbore Set - CB38-532TC - Drill 3.96mm; Drill Counterbore 9.5mm Tungsten Carbide Tipped Ideally suited for recessing bolt and screw heads. For use with plywood, particle boards and plastics (abrasive). TCT veANKROYU ANKROYU Countersink Drill Bit Set, Alloy Steel Counterbore Drill Bit, Adjustable Limit Counterbore Drill Bit for Wood Pl 【Adjustable】Experience the freedom to adjust the limit of this drill bit, ensuring it won't pierce through while maintaiTYCIONG Counterbore Flat Bottom Counterbore 12×8×2 5pcs Countersink End Mill Cutter Slot Drill Bits Tool M3 M8 4 Flutes Hss-Al C High Precision: This Of Cutter Cut Hole And Bottom Hole With High Alignment, Due To Its High Production Efficiency, It IANKROYU ANKROYU 3.5 X 10mm Countersink Drill Bit Kit, Alloy Steel Counterbore Drill Bit, Adjustable Limit Counterbore Drill Bit 【Adjustable Limit】The versatility of this drill bit's adjustable limit feature,ensuring it won't pierce through while maMeichoon Meichoon Step Drill Bits 4-12mm/4-20mm/4-32mm 3 Pcs Set, High Speed Steel Nitride Spiral Flute Triangle Handle Pagoda Dr High Speed Steel - Suitable for below 25 hardness of the work piece, such as carbon steel, sheet iron, insulation boardsBIBFXAA BIBFXAA Two Stage Step Drill Bit M3-M12 Screw Counterbore Twist Countersink Drill for Stainless Drilling and Chamfering（ - Drill Bits Have Reliable Performance and Durability When Drill Holes on Plastics, Aluminum, Copper, Stainless Steel anSENNMONN SENNMONN M8X1.0 Thread Repair Kit with Insert HSS Drill, Tap, Counterbore, Installation Driver, Metric, 10PCS Stainless KIT INCLUDES: Drill x1, Counterbore x1, Tap x1, Install Driver x 1, M8X1.0X11.7MM Inserts x 10. with Custom EVA Box.FIYA New Lon0167 HSS Straight Featured drill hole 4 reliable efficacy Flutes Counterbore End Mill Milling 3.2mm x 6mm(id:bed Domary Domary Adjustable Depth Countersink Bit Set Self Tapping Screw Counterbore Drill for Wood Installation [Excellent Drilling Ability] The countersink bit is crafted from hard alloy steel with hrc50-54 hardness, ensuring durabAmana Tool Amana Tool - (55286) Carbide Tipped Counterbore 1/2 Dia x 1/4 Quick Release Hex Shank (D) Diameter: 1/2GZQHAZYW 1pc HSS Counterbore End Mill M3.2-M20 4 Flute Slotting Bit Counterbore Mill Milling Cutter for Wood/Metal Drilling(4.2x8 1. High toughness, high hardness, abrasion resistance.WIZ'A GREATTOOL (Great tool) counterbore cutter 20mm ZAC-20 Marhynchus Marhynchus 7Pcs Counterbore Set M3 High Speed Steel 4 Flutes Straight Shank End Mills in Counter Bored Hole with Set of [Precise Counterbore Work] The set excels in creating accurate counterbored holes, suitable for a range of materials incFIYA New Lon0167 Slotting Tool Featured 5.9mmx3.2mm 4 Flute reliable efficacy High Speed Steel Counterbore End Mill(id:711 30 YTgilo YTgilo Computer Water Cooling G1/4 Double Female Threaded Straight Through Counterbore Chrome Plated 15mm Long for Compu G1/4" thread to G1/4" thread.Amana Tool Amana Tool - (55282) Carbide Tipped Counterbore 3/8 Dia x 1/4 Quick Release Hex Shank (D) Diameter: 3/8Alfa Tools Alfa Tools CSC55653#8 3 Flute Solid Pilot Cap Screw Counterbore High speed steel cap screw counterboreSENNMONN SENNMONN M10X1.0X12.7MM Thread Repair Kit with Insert HSS Drill, Tap, Counterbore, Installation Driver, Metric, 10PCS St KIT INCLUDES: Drill x1, Counterbore x1, Tap x1, Install Driver x 1, M10X1.0X12.7MM Inserts x 10. with Custom EVA Box.Generic Countersink Drill Bits - Adjustable Counterbore Drill Bit,Countersink Drill Bit with Limiter, Woodworking Drill Bit, Cou Seamless Construction Efficiency: Specifically designed for solid wood boards, PVC, and density boards, this CountersinkAuoeer Tools 7pcs/Set Counterbore Set M3-M12 High-Speed Steel 4 Flutes Straight Shank Counterbore End Mills Drill bit Set High speed steel, high quality and durable.KUNLONGSKY Counterbore Drill Taper Drill Kit Woodworking Opener Set Hexagon Screw Hardware Tools Counterbore Drill 7PC characteristic: Our countersunk drill is made of alloy, which ensures its high hardness and durability and provides exceMeichoon Meichoon Forstner Bit Set Step Drill Bits 4-20mm/4-32mm Cobalt Spiral Groove Large Bit Pagoda Step Drill Bit Set Hole Re M35 HSS & Cobalt - M35 High speed steel makes it last longer than others, cobalt ensures easily cut through steel sheetsTTOCAR Counterbore Drill Bit, Countersink Drill Bit Drill Bit Limit Counterbore Drill Bit Limit Adjustable Alloy Steel Fast Chi Ultra-Durable Coating: Our drill bits are coated with premium , ensuring exceptional durability and extended lifespan. ESimpson Strong-Tie Simpson Strong-Tie FSBIT Fascia Counterbore Bit for T08175FS Fascia Screws title: Simpson Strong-Tie FSBIT Fascia Counterbore Bit for T08175FS Fascia ScrewsTREND Trend Snappy 16mm TCT Counterbore with 6.35mm HSS Drill, Quick Release System, Ideal for Abrasive Materials, SNAP/CB/5TC Counterbore with a slow spiral drill fitted.TREND Trend Snappy 16mm TCT Counterbore with 6.35mm HSS Drill, Quick Release System, Ideal for Abrasive Materials, SNAP/CB/5TC Counterbore with a slow spiral drill fitted.GTRH 7pcs/Set Counterbore Set M3-M12 High-Speed Steel 4 Flutes Straight Shank Counterbore End Mills-GTRH CCJZBCAU Steel Countersink Drill Bit Set Easy to Install Counterbore Hole Drill Bit with Adjustable Depth Stop for Woodworking... Multiple Sizes: Available in 2.8x8mm, 3x8mm, 3.2x8mm, 3.5x8mm and 4x8mm sizes. Also comes with a clamp head and a screwSOPOTUTU SOPOTUTU 200Pcs 304 Stainless Steel Counterbore Washers Kit, Cup-Shaped Countersunk Flat Locking Washers for Industrial Smooth assembly: the burrfree surface ensures smooth assembly, reducing the risk of damage to fasteners and providing aAmana Tool Amana Tool - (424000) Face Frame Counterbore No.1 Amana Tool is an industry leader for over 40 yearsHGRYNDRO HSS Router Bit M3-M12 Milling Cutter Slotting Bit Blue Coated Counterbore End Mill for CNC Machine Milling Tools(7pcs Se 1. High toughness, high hardness, abrasion resistance.Generic Wood Countersink Drill Bit | Adjustable Counterbore Drill Bit | Woodworking Drill Bit, Countersink Drill Bit with Limite Seamless Concealing Capability: Engineered for smooth drilling in solid wood, PVC, and density boards, this CountersinkFOMIYES FOMIYES 200Pcs 304 Stainless Steel Countersunk Flat Washers Recessed Grommet Counterbore Gaskets for Industrial Construc Enhanced stability: design adds an extra layer of stability, making these washers ideal for applications requiring a secLyaciomn Lyaciomn Counterbore Drill Taper Drill Set Kit Woodworking Opener Set Kit Hexagon Screw Hardware Tools Counterbore Drill ALL IN RED BOX ALL IN RED BOX M35 Step Drill Bit 4-20mm Cobalt Spiral Groove Large Bit Pagoda Step Drill Bit Set Hole Reamer Triangle H Much More hardness: M35 HSS is harder lot than HSS 4241, suitable for drilling in stainless steel plate & quenching steeBIBFXAA BIBFXAA Two Stage Step Drill Bit M3-M12 Screw Counterbore Twist Countersink Drill for Stainless Drilling and Chamfering（ - Drill Bits Have Reliable Performance and Durability When Drill Holes on Plastics, Aluminum, Copper, Stainless Steel anGeneric Countersink Drill Bits for Wood, Adjustable Pilot Screw Set, Woodworking Drill Bit, Countersink Drill Bit with Limiter, ϡSolid Connection: Achieve perfect results with this Countersink Drill Bit Set, specifically engineered for solid wood,zhengpingpai 7PCS Wood Screw Drilling Counterbore Countersunk Hole Sinking Head Woodworking Drill Cone Counter Bit zhengpingpai Specifications: 5 #, 6 #, 7 #, 8 #, 9 #, 10 #, 12 #.Generic 10pcs M5xD16xH3.5mm Aluminum Alloy Fisheye Gasket Tapered Concave Hole Counterbore Screw D16 Outer Diameter 3.5mm Height Inner Diameter: gold colorGeneric 15pcs M3xD12xH3mm Aluminum Alloy Fisheye Gasket Tapered Concave Hole Counterbore Screw D12 Outer Diameter 3mm Height (In Inner Diameter: aluminum color