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Best 4mm Metal Drill Bit

Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs)

  • Premium M42 8% Cobalt Steel ,68-70 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life..
  • 3 Steps Desigh for Cutting through Stainless Steel,Hard Metals,Aluminum,Plastic..
  • This Cobalt Drill Bit is Typically Capable of Running Three to Five Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes..
  • The Sufficiently Sharp Bit Edge Can Cut the Metal Material into Long Strips of Iron Chips rather than Slowly Grinding Throng the Material with a Blunt Drill Bit..
  • 19Pcs 135 Degree Split Point Drill Bits Includes :1mm(length:3.4cm) 1.5mm 2mm 2.5mm 3mm 3.5mm 4mm 4.5mm 5mm(length:8.5cm) 5.5mm 6mm(length:9cm) 6.5mm 7mm 7.5mm 8mm(length:11.5cm) 8.5mm 9mm 9.5mm 10mm(length:13cm) [DIA 0.5mm Increments] ..
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Set of 3 HSS6542 M2 Steel Spiral Groove Unibit Step Drill Bits Set for Stainless Steel Metal Wood Hole Cutting Tool

  • Easily drills on iron sheets, stainless steel sheets, steel sheets as well as aluminum sheets.RevolutionarySuit for use in hardness under 28 artifacts,(Such as: Stainless steel , iron plate, aluminum, wood ).
  • You can use water to cooling it when it is work and it can be used for even longer.
  • Meet Your Demands - With the step drill bits we offered, you can process different kinds of diameter holes, which greatly saves you a lot of trouble.Great for metal wood plastic countersunk. Suitable for Home DIY, and General Building Engineering Use..
  • M2 High speed steel makes it last longer than others, ensures easily cut through stainless steel sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease, and it can automatically deburr holes while drilling to keep the drill bit clean..
  • 4mm to 32mm 15 Steps ,4mm to 12mm 9 Steps .4mm to 20mm 9 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm,18mm,20mm).
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Aexit 5 in Accessories 1 4mm to 10mm Width Tip Straight Shank Drill Bit Auger Accessories for Woodworking

  • Total Length : 74mm, 84mm, 94mm, 117mm, 118mm.
  • Fluted Length : 43mm, 51mm, 60mm, 73mm, 80mm.
  • Shank Length : 31mm, 33mm, 34mm, 38mm, 38mm.
  • Shank Diameter : 3.3mm, 4.2mm, 4.5mm, 6mm, 7.1mm.
  • Package Content : 1 x 5 in 1 Drill Bit Set.
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28 Pack Woodworking Chamfer Drilling Tools with a Case Rocaris Including 6 Countersink Drill Bits Set 5 Metric Step Drill Bit 7 Counter Sinker Drill Bit Set with L-Wrench 8 Wood Plug Cutter.

  • ...a suitable woodworking gift for dad? This Multi function drill tool kits can solve this problem, which Including countersink drill bits, L-wrench, wood plug cutter, step drill bit, center punch.
  • 5 Pack HSS Titanium Coating Step Drill Bits: 3/16-1/2'', 1/8-1/2'', 1/4-3/4'', 3/16-7/8'', 1/4-1-3/8'', suitable for sheet metal, wood board, plastic, aluminum alloy, copper, NOT recommended for high carbon steel, hard metal..
  • 7 Pack Countersink Bit for Wood – Made of high carbon steel with high hardness & abrasive resistance, large chip flute and five edge chamfers can drain saw dust faster and easier(Size - 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm). With 1pc hex L-wrench, you could easily remove and adjust counter sleeve depth and drill depth..
  • 8 Pack 3/8" Shank Wood Plug Cutter Drill Bit Set – Made of durable carbon steel, it is used for tapered 1/4", 3/8", 1/2", 5/8" corks to cover recessed screw holes or hide imperfection. Can cut the plug 22mm/23mm/25mm/26mm in depth as well..
  • 6 Pack 1/4" Hex Shank 5 Flute Countersink Drill Bit – Made of high speed steel, they are pectect for sinking 90° hole in Wood and PVC board for ountersunk screw. Diameter- 6mm(1/4"), 8mm(5/16"), 9mm(3/8"), 12mm(1/2"), 16mm(5/8"), 19mm(3/4")..
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13 PCS Metric M35 Cobalt Steel Twist Drill Bit Set HSS Extremely Heat Resistant with Straight Shank to Cut Through Hard Metals Like A Hot Knife Through Butter,Such as Stainless Steel,Titanium Alloy

  • ✅ Faster Cutting and Longer Life— Our Twist Drill Bit HSS are Manufactured from M35 cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, with up to 12 times when compared with an average HSS drill bit..
  • ✅ No Center Punch Is Needed—The 135° Quick-Cut points are self-centering and penetrate quickly with less pressure. Twist drill bit kit Will not "walk" or "wander".
  • ✅ Extremely Heat Resistant — twist drill bits Must be used and operated at 1500 RPM or greater for maximum efficiency. Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks.
  • ✅ Metal Cutting — Drilling Steel, Stainless Steel, Hard Metal and Iron.Particularly successful in cutting through hard metals such as hard metal ,stainless steel and cast iron, although they can be used for softer materials, too.
  • ✅ Easy Usage And Store —The set includes 13pcs of M35 cobalt steel twist drill bits: 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm,13Pcs Packed in a Plastic Bag For Easy Usage And Store.
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Ohamtes 4mm Reduced Shank Twist Drill Bits High Speed Steel HSS 4341 for Iron/Copper/Plastic/Aluminum Plates/Metal Materials, Round Shank, Double Edge, 2 Pcs

  • Parameter: Cutting and Shank Dia : 4mm / 0.16″, Cutting Edge Length: 43mm / 1.69″, Twist Drill Total Length : 75mm / 2.95″..
  • Short Shank Twist Drill Bit Uses: For Stainless Steel/Aluminum Alloy/Iron/Copper/Plastic/Aluminum Plates/Metal Materials etc..
  • How To Use: When in use, The drill bit should be perpendicular to the workpiece and oil, water, or coolant should be added to keep cool..
  • Features: Premium gold titanium and black nitride dual coating, more heat and wear resistant. HSS straight shank tool strong hardness and toughness..
  • Package Content: 2 x Double Flutes Straight Shank Twist Bit..
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3Pcs HSS Titanium Coated Step Drill Bit Set with Automatic Center Punch, 1/4' Hex Shank Drive Quick Change Metric High Speed Steel Cone Drill Bit for Steet Metal Wood Plastic Hole Cutting

  • 【Widely Used】Perfect Step Drill Bits suitable for drill holes in various material： within 3mm/0.12 inch (Iron Plate, Copper Plate, Aluminum Plate).
  • within 5mm/0.2 inch (Wood, PVC sheet, Insulation Boards). Not suitable for hard and brittle materials such as stainless steel, glass, tile floors, walls etc..
  • 【Material】HSS combined with a titanium coating. More capable and durable..
  • 【Easy Drilling】Two-Flute Design for smoother cutting. High Step design let you feel the stop and never drill bigger in mistake.
  • 【SET INCLUDES】Bit #1 (5 steps): 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm).
  • Bit #2 (9 steps): 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm).
  • Bit #3 (15 steps): 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm,30mm,32mm).
  • 【Package Included】 3-Piece HSS Groove Step Drill Bit (4-12/ 4-20/ 4-32mm ) + 1 Automatic Center Punch. 1/4" Hex shaft drives are suitable for all kinds of for home DIY power drills..
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3Pcs HSS Titanium Coated Step Drill Bit Set 1/4 Hex Shank Quick Change High Speed Steel Cone Drill Bit Kit for Plastic Wood Metal Sheet Aluminum Hole Drilling Metric 4-12mm/4-20mm/4-32mm

  • 【Widely Used】Perfect Step Drill Bits suitable for drill holes in various material： within 3mm/0.12 inch (Iron Plate, Copper Plate, Aluminum Plate).
  • within 5mm/0.2 inch (Wood, PVC sheet, Insulation Boards). Not suitable for hard and brittle materials such as stainless steel, glass, tile floors, walls etc..
  • 【Material】HSS combined with a titanium coating. More capable and durable..
  • 【Easy Drilling】Two-Flute Design for smoother cutting. High Step design let you feel the stop and never drill bigger in mistake.
  • 【SET INCLUDES】Bit #1 (5 steps): 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm).
  • Bit #2 (9 steps): 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm).
  • Bit #3 (15 steps): 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm,30mm,32mm).
  • 【Package Included】 3-Piece HSS Groove Step Drill Bit (4-12/ 4-20/ 4-32mm ). 1/4" Hex shaft drives are suitable for all kinds of for home DIY power drills..
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QWORK Multipurpose Drill Bits, 6 Pcs Set Multi-Material Drill for Drilling in Tile, Brick, Glass, Plastic and Wood

  • 1) One drill bit replaces two drill bits (1x glass & tile drill bit + 1x Mansonry drill bit), ideal for drilling fastner holes in bathroom tiles, or wall mirrors. Once it drills through the tile or mirror this drill bit will cope easily with any masonry behind it.
  • 2) Spear pointed design strong tungsten carbide tip can easily penetrate various material(tile, concrete, brick, glass, plastic and wood,etc) and reduces breakout.
  • 3) 6 Pcs drill bit set with 6 different sizes: 1x 3mm (1/8"), 1x 4mm(5/32"), 1x 5mm(3/16"), 1x 6mm (1/4"), 1x 8mm (5/16"), 1x 10mm (3/8").
  • 4) U type slot design with fast drilling dust remove, 3-flats shank allows drill bit to be held tightly and stably in power drill. When drilling hard material (glass, porcelain floor tile, marble or granite), please use water for lubrication.
  • 5) Heavy duty drill bits made by factory that manufactures products for big international tool brands with guaranteed quality. For genuine multi-material drill bit, please identify QWORK brand drill bits packed in sealed transparent plastic box with two sides of blue color stickers.
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K Kwokker 15Pcs Masonry Drill Bit Set 5/8\ to 1/8\

  • ☺[15 Pcs 16mm to 3mm (5/8" to 1/8") Masonry Drill Bits, More Quantity, More Size] Masonry drill bit set with case. Easy to store and take. 16mm 14mm 12mm 10mm 8mm 6mm 5mm 4mm 3mm (5/8" 9/16" 1/2" 3/8" 5/16" 1/4" 3/16" 5/32" 1/8"). There are multiple 9 sizes that will help in drilling by starting with the smallest bit and continuing to the size needed. To meet your more needs..
  • ☺[Ceramic Drill with Cemented Carbide Tip, Hardness is Higher Than Ordinary Drill, More Wear Resistance] Excellent tile drill bits with nice point, make the drilling much more easier, less effort and work with a minimum of pressure. Like a hot knife thru butter! WATER IS THE KEY TO GETTING DRILL BITS TO LAST. PLEASE COOLING WITH WATER AND CONTROL THE SPEED WHEN DRILLING..
  • ☺[Widely Used Range, a Good Beginning is Half Done, Carbide Drill Bits Perfect For] masonry, title, glass, wood, plastic, ceramic, terracotta, brick, stucco, brick, cinder block, steel, laminate flooring, garden pot, marble, pickguard, mirrors, windows, etc. PLEASE NOTE THAT FOR DIFFERENT SIZES, IT IS RECOMMENDED TO USE DIFFERENT DRILLING SPEEDS TO PREVENT DRILL BIT DAMAGE CAUSED BY WRONG DRILLING SPEEDS..
  • ☺[1 x K Kwokker Ceramic Drill Bit Replaces Two Drill Bits (1 x Glass & Tile Drill bit + 1 x Masonry ....
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MAPRIAL 17 Pieces 4mm-15mm(5/32”-37/64”) Diameter Metric Brad Point Drill Bits Set with 12 inch Extra Long Drill Bit for Drywall, Hardwood, Plywood, Plastic, Woodworking

  • PACKAGE INCLUDED - 17 Pieces brad point drill bits included: 4mm X 2, 5mm X 2, 6mm X 2, 7mm X 2, 8mm X 2, 9mm X 2, 10mm 2, 15mm X 1, 14mm X 1, 12mm X 1, The length of the drill bit set are: 75mm, 85mm, 92mm, 100mm, 115mm, 120mm, 160mm, 200mm, 300mm..
  • WITH EXTRA LONG DRILL BITS - Includes a set of 10 different diameter standard sizes to meet your different needs :4mm(1/8”), 5mm(5/32”), 6mm(1/4”), 7mm(9/32”), 8mm(5/16”), 9mm(11/32”), 10mm(3/8”), 12mm(1/2”), 14mm(9/16”), 15mm(37/64”) , And with the extra long drill bit body provides better stability and balance during quick operation to ensure position is intact..
  • HIGH QUALITY - The brad-point drill bits is made from carbon steel material, which is for fast cutting against tough wood material. High hardness, offer superior cutting power and durable..
  • WIDELY USAGE - Is suitable for hand drill and conventional electric drill and perfect for drilling in drywall, wood, fiberboard, particleboard, rubber, plywood, Composite Materials, plastic, PVC and other different materials..
  • BRAD POINT DRILL BIT - Penetrate surface quickly because of the sharp point on the tip. Better in Centering and no skid. Brad points have a sharp point on the tip, which prevents the bit from "walking" like standard tw....
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3Pcs High-Speed Steel Spiral Step Drill Bit Set with Automatic Spring Loaded Center Punch Power Tools HSS Cone Titanium Coated Metal Hole Cutter 1/4' Hex Shank Drive Quick Change 4-12mm/4-20mm/4-32mm

  • 【Widely Used】Perfect Step Drill Bits suitable for drill holes in various material： within 3mm/0.12 inch (Iron Plate, Copper Plate, Aluminum Plate).
  • within 5mm/0.2 inch (Wood, PVC sheet, Insulation Boards). Not suitable for hard and brittle materials such as stainless steel, glass, tile floors, walls etc..
  • 【Material】HSS combined with a titanium coating. More capable and durable..
  • 【Easy Drilling】Two-Flute Design for smoother cutting. High Step design let you feel the stop and never drill bigger in mistake.
  • 【SET INCLUDES】Bit #1 (5 steps): 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm).
  • Bit #2 (9 steps): 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm).
  • Bit #3 (15 steps): 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm,30mm,32mm).
  • 【Package Included】 3-Piece HSS Groove Step Drill Bit (4-12/ 4-20/ 4-32mm ) + 1 Automatic Center Punch. 1/4" Hex shaft drives are suitable for all kinds of for home DIY power drills..
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HOHXEN 3 Packs Spiral Step Drill Bit Set with 4-12mm/4-20mm/ 4-32mm, Total 32 Sizes, 1/4\ Hex Shank Cone Titanium Coated High Speed Steel, Multi-Functional Industrial DIY Metalworking tools

  • 3 standard SAE Spiral step drill bits can drill 32 different size of holes on different thickness of materials.The 3 Cutters Come in the Following Sizes: 4-12mm: 4mm,6mm,8mm,10mm,12mm.
  • 4-20mm: 4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm.
  • 4-32mm: 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm..
  • Made with drop forged heat treated high speed steel (HSS) with titanium nitride coating for longer life time..
  • 4241 high-speed steel, used in hardness under 25 ¡ã workpiece, the plate thickness under 5 mm..
  • 1/4" round shank (6.35mm)can be easily fit into power driver, drill and press drill. Two-flute design provides faster, smoother cutting without walking and a tri-flat shank ensure a firm grip..
  • Comes with 3Pcs 1/4 Inch round Shank HSS Titanium Coated Step Drill Bit Set - 4-12/4-20/4-32mm With Pouch.Suitable for punch holes through sheet metal, iron plate, aluminum plate, brass, wood, plastic, etc..
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