Best Metric Countersink Drill Bits in 2026

The product is #6 drill driver

The item is not “Impact Ready” and only to be used with a regular drill chuck, not an impact driver

The product is manufactured in China

[Specifications and packaging]: Countersink drill bit set includes 5 pcs countersink bits and 1 pc aluminum carrying case.Include size:1/4", 3/8", 1/2", 5/8", and 3/4".

[Function]: Counter sink drill bits sink holes into most machinable metals, plywood, softwood, hardwood, fiberglass plastic, mild steel.

[Material]: Metal countersink bits are made from industrial grade high-speed steel for increased durability.Each sink has a black oxide coating to resist corrosion.

#10 DRILL FLIP DRIVE COUNTERSINK

#10 DRILL FLIP DRIVE COUNTERSINK

#10 DRILL FLIP DRIVE COUNTERSINK

CAPABILITY & DURABILITY: Classic HSS construction with black oxide coating for capability and durability, also ensures a longer service life so that the drill bits last through multiple uses.

135° SPLIT POINT TIP & TWIST DESIGN: Increases cutting speed with self-centering and prevents walking, clears chips and particles faster

MULTI-FUNCTIONAL: Great drill bits set for metal/wood/plastic countersink. Suitable for Home DIY, and General Building/Engineering Use.

✅【Five-blade design】Each countersunk drill adopts five-blade blade design, which can reduce vibration and prolong life, achieve smoother drilling, with 1/4" metal hex.

✅【Compact Grinding】Precision grinding 82° tip for drilling holes on most medium hardness stainless steel, copper, aluminum, wood, plastic.

✅【M2 HSS Cobalt Layered Drill Bits】M2 Cobalt Coated, each metal countersunk drill bit is made of high quality M2 HSS material, this countersunk drill bit set is excellent in heat, corrosion and rust resistance to reduce friction and run cooler.

✅【Five-blade design】Each countersunk drill adopts five-blade blade design, which can reduce vibration and prolong life, achieve smoother drilling, with 1/4" metal hex.

✅【Compact Grinding】Precision grinding 82° tip for drilling holes on most medium hardness stainless steel, copper, aluminum, wood, plastic.

✅【M2 HSS Cobalt Layered Drill Bits】M2 Cobalt Coated, each metal countersunk drill bit is made of high quality M2 HSS material, this countersunk drill bit set is excellent in heat, corrosion and rust resistance to reduce friction and run cooler.

COUNTERSINK DRILL BIT SET & WOOD PLUG CUTTERS - Included 2 Pieces #8(11/64") and #12(7/32") Adjustable Countersink and Counterbore Cutters with HSS M2 Tapered Drill Bit (for up to 3/8" and 1/2" screws head), 2 Wood Plug or Dowel Cutters 3/8" and 1/2" diameter, 1 Hex Wrench. The set is Imperial Units of Measurements (not metric) - Also known as Adjustable Countersink, Countersink Bits For Wood, Dowel Maker, Plug Cutter For Woodworking, Plug Cutter Kit

IMPORTANT TIPS FOR USE - Cutters for Countersink and Counterbore depth are Adjustable for many screws sizes. Developed to complement each other the Adjustable Countersink & Counterbore makes perfect and clean holes to be filled with the Wood Plugs or Wood Dowels. Plug Cutters must be used with Drill Press to have a perfect diameter. The Plug Cutters are not designed to be used with a hand drill, attempting to use a hand drill will cause broken blades or imperfect plugs.

QUICK CHANGE SHANK - The Quick Change 1/4" Shank is Universal size, Compatible with all 1/4" Quick Change Chucks.

5pcs 5 Flutes 82 Degree Hss Countersink Drill Bit Woodworking End Milling Tool

the self-starting point and five-fluted design makes it reduce chatter and vibration during the drilling process. It is easy to remove chips and clean holes, so that the operation is stable, the cutting is neat and accurate, without burrs, and the cutting edges is not easy to blunt. The staggered cutting teeth arranged of the countersink drill bit to insure free chip flows and rapid chatter free cutting.

The countersink drill is made of high-speed steel and undergoes high-frequency quenching for heat treatment, precision ground 82° tip, which has high hardness and toughness. The chamfer cutter kit is coated into black oxide finish, which has anti-rust , corrosion resistance, high wear resistance, can withstand high temperature conditions, and has a long service life.

[SIZE] - 5mm bore 8mm thickness drill stop. Hex wrench is included to help adjust and install the stop rings.

[MATERIAL] - Strong and durable steel with black-oxide finished for better corrosion-resistance. Set screw type will stay sturdy when tightened and is specially designed not to break the bits.

[ADJUSTABLE] - Drill stop bit can be quickly and easily adjusted at any point on drill bit flutes, helps to drill holes to exact depths, prevents under and over drilling.

29 Pack Woodworking Chamfer Drilling Tool Kit with a Handy Plastic Case– A Versatile tool set that would make a nice gift for woodworker, Dad, DIY lover, home hobbyist. Ideal for wood, particle board, fiberboard, logs, plastic boards, PVC pipes used on hand drill, bench drill and electric drill.

3 Pcs 1/4" Metric Hex Shank HSS Step Drill Bit Set – With titanium coating, it has great heat/ corrosion/ rust resistance. Specification: 3/16''-1/2'', 1/4''-3/4'', 1/8''-1/2''. Suitable for drilling holes within 0.12 inch (Iron Plate, Copper Plate, Aluminum Plate); within 0.2 inch (Wood, PVC sheet, Insulation Boards). Not recommend for hard and brittle materials such as stainless steel, glass, tile floors, walls etc.

7Pcs 3- Pointed Countersink Bit for Wood – Made of high carbon steel with high hardness & abrasion resistance, large chip flute and five edge chamfers can drain sawdust faster and easier(Size include: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm). With 1pc hex L-wrench, you could easily remove and adjust counter sleeve depth and drilling depth.

[SIZE] - 8mm bore 8mm thickness drill stop. Hex wrench is included to help adjust and install the stop rings.

[MATERIAL] - Strong and durable steel with black-oxide finished for better corrosion-resistance. Set screw type will stay sturdy when tightened and is specially designed not to break the bits.

[ADJUSTABLE] - Drill stop bit can be quickly and easily adjusted at any point on drill bit flutes, helps to drill holes to exact depths, prevents under and over drilling.

SPECIFICATIONS: With a working size range of 3mm - 19mm, the ARES Internal Deburring and Chamfer tool features a heavy duty die cast housing with a black oxide finish for durability and high-speed steel blades that clean and repair the inside edges of pipes and new cuts quickly and safely. This tool utilizes a ¼-inch hex shank with a quick release design for use with standard drill chucks, bit couplers, and impact drill drivers.

DESIGN: Newly-cut pipes and bolts need an internal debur treatment to keep edges smooth to remove the risk of injury; while a file or angle grinder will do the job, our chamfer tool is much faster and more accurate. Fitted with six HSS blades, this deburring tool is a perfect complement to the essentials in a machinist tool box or construction site. **Ensure that appropriate eye protection is worn during use.**

VERSATILE: Our burr removal tool is suitable for use with a variety of materials, from plastics to metals, and even wood. Whether you need a deburring tool for metal or to smooth out a new cut in plastic or resin, this tool provides a safer surface and an extra level of polish to a fresh cut. This tool’s internal deburring design also allows it to punch holes in metals and other material, and it can even drill counter sinks.

Comes in 7 sizes in a storage box – package including 7 Pieces of black Center Drill Bits Set in different sizes 1.0 1.5 2.0 2.5 3.0 4.0 5.0, which can meet most of the center hole needs

Well-made Center Bits - made of high grade M2 High Speed Steel well known as high temperature wear resistant and solid

Make Excellent Center Holes – Using these center drill bits to drill a starer hole for longer drill bits in wood without off centering, and for tap drill in metal to align properly, etc.

[SIZE] - 3mm 4mm 5mm 6mm 8mm 10mm 12mm bore 8mm thickness drill stop. Hex wrench is included to help adjust and install the stop rings.

[MATERIAL] - Strong and durable steel with black-oxide finished for better corrosion-resistance. Set screw type will stay sturdy when tightened and is specially designed not to break the bits.

[ADJUSTABLE] - Drill stop bit can be quickly and easily adjusted at any point on drill bit flutes, helps to drill holes to exact depths, prevents under and over drilling.

[SIZE] - 8mm bore 8mm thickness drill stop. Hex wrench is included to help adjust and install the stop rings.

[MATERIAL] - Strong and durable steel with black-oxide finished for better corrosion-resistance. Set screw type will stay sturdy when tightened and is specially designed not to break the bits.

[ADJUSTABLE] - Drill stop bit can be quickly and easily adjusted at any point on drill bit flutes, helps to drill holes to exact depths, prevents under and over drilling.

[SIZE] - 3mm 4mm 5mm 6mm 8mm bore 8mm thickness drill stop. Hex wrench is included to help adjust and install the stop rings.

[MATERIAL] - Strong and durable steel with black-oxide finished for better corrosion-resistance. Set screw type will stay sturdy when tightened and is specially designed not to break the bits.

[ADJUSTABLE] - Drill stop bit can be quickly and easily adjusted at any point on drill bit flutes, helps to drill holes to exact depths, prevents under and over drilling.

High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance

Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge

Round shanks allow use with a wide variety of toolholding systems

PREMIUM QUALITY - These hex shank wood drill bits are made of HSS steel , and the chamfering sleeve are made of carbon steel with black oxide coating, which features with high hardness, wear resistance and provides excellent cutting ability.

TAPERED BITS - The design of tapered bit with sharp pointed tip can ensure the hole tight fit for screws. Wide cutting flute can increased the wood chips flow quickly and accurately to leave a clean pilot hole.

ADJUSTABLE LENGTH - These countersinking drilling bit built with depth adjustable counter bore attaches to flat on shank with the hex screws for controlled pilot hole depth, which can meet the different length of screws you needed.

COUNTERSINK DRILL BIT SET - Also Countersink For Woodworking - Included 3 Pieces all same size #6(9/64" Tapered drill bit) Cutters (for up to 3/8" or 10mm screws head), 1 extra Tapered High Speed Steel M2 Drill Bit (6542 grade), 1 Stop Collar, 1 Hex Wrench

ADJUSTABLE COUNTERSINK - Also Countersink Bits For Wood - The Adjustable Stop Collar allows you to adjust the Counterbores depth and Adjustable Cutters can be adjusted for many screws sizes. Also known as Juego De Brocas Avellanadoras Para Madera, Avellanadores Para Madera, Juego De Brocas Para Avellanar, Broca De Avellanado.

QUICK CHANGE SHANK - The Quick Change 1/4" Shank is Universal size, Compatible with all 1/4" Quick Change Chucks.

[3in1 Set]: Diameter: 12mm / 0.47 inch, 16mm / 0.63 inch, 19mm / 0.75 inch

[Universal Shank]: 1/4" hexagonal shank fits most handheld and stationary drills.

[5 Flute Design]: Five flutes design reduces vibration for smoother drilling and extended life.

[3in1 Set]: Diameter: 12mm / 0.47 inch, 16mm / 0.63 inch, 19mm / 0.75 inch

[Universal Shank]: Round shank fits most handheld and stationary drills.

[5 Flute Design]: Five flutes design reduces vibration for smoother drilling and extended life.

High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance

Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge

Round shanks allow use with a wide variety of toolholding systems