The Best Carbon-steel Countersink Drill Bits of 2023

【IDEAL COMBO SET】7 countersink drill bits size of Ø7/64”(3mm), 5/32”(4mm), 13/64”(5mm), 1/4”(6mm), 9/32”(7mm), 5/16”(8mm) combine with Ø19/32”(15mm) countersink pedestal, 13/32”(10mm) combine with Ø45/64” countersink pedestal. 3 countersink bits with most commonly-used sizes of Ø12mm(1/2"), 16mm(5/8"), 19mm(3/4") A 1/10”(2.5mm) Free Hex Key Wrench Plus. Come with a portable plastic case for easy convenient select, storage and organization.

【PREMIUM QUALITY】Made with industrial grade high-carbon steel, great hardness provides sharp edges, high strength takes bits with superior cutting capactiy and durability. Ideal for household woodworking and DIY Projects.

【EFFICIENT DESIGN】For 7 countersink drill bits, 3-point tricuspid ensures drill process accurate and fast, no offset, slip and bias during drilling; 2-spiral flute makes chip removing easy and efficient. For 3 countersink bits, 90°on the point & 1/4" hex shank for quick change make the countersink process convenient. All drill bits get 5-edged chatter-free chamfer cutter pedestal design makes countersink precise and smooth. All cutting edge are well hardened and honed for sharpness.

【REMOVABLE& ADJUSTABLE】Perfect for Wooden planks, Fiberboard, Particle board, Plywood, Plastic, PVC and soft metals. Suitable for hand drill, bench drill and electric drill, #12，#16, #19 are especially fine for quick drill.The drilling depth of countersink drill bits are adjustable by screws with various lengths; Meanwhile, their bits are removable for easy cleaning, sharpening,and replacement. × NOT for hard metals or steel board.

【SOPHISTICATED DESIGN】Extra straightening drill bit with exquisite countersink pedestal provide user a method of drilling a countersink hole with 1 time drill process.Extra straightening drill bit makes the drill hole accurate and smooth, exquisite countersink pedestal creates proper countersink structure with efficient experience.

Delicate and practical, high hardness, firm and strong.

A set provides four different sizes of tenon drill bit to meet your different needs.

The drill bit is made of 45# carbon steel ,very durable.

Professional and practical design with beautiful appearance, easy to carry and use.

The drill bit is suitable for bench drill with low rotation speed.

CAPABILITY & DURABILITY: Classic Carbon Steel Material. High hardness, offer superior cutting power and durable.

THREE-POINTED DESIGN:Quickly and accurately drill a smooth hole.Better in CENTERING and NO SKID . Five-edged chamfer design will fast discharge chips from the hole on both sides automatically.

REMOVABLE & ADJUSTABLE: Easy to use the combination of Hex Key to adjust or disassemble the countersink drill bit and the five-flutes chamfering.

MULTIPURPOSE: Suitable for bench drill, hand drill and conventional electric drill. Perfect for wood, fiberboard, particleboard, plywood, plastic, PVC, rubber etc.

SATISFY ALL YOU DEMAND: Set include 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm and 1 free Hex Key Wrench.If you have any problem, please feel free to contact us.

👍Package Content: 6Pcs Countersink Drill Bit (2pcs for each size).

👍3 Different Sizes: 15/32"(12mm), 5/8"(16mm), 3/4"(19mm). Meet your various needs.

👍The drill bit is made of carbon steel with strong toughness, long service life, stable quality and fast cutting speed.

👍It is manufactured through multiple heat treatment processes, which greatly improves the sharpness and durability of the cutting edge.

👍Suitable for hand-held electric drill, vertical electric drill and mobile belt magnetic drilling machine. Perfect for fast drilling holes and cutting in stainless steel, iron, aluminum, copper, metal, etc.

[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.

[Black Oxide Finish]: Black oxide finish for added corrosion resistance. Sharp and smooth cutting edge, high working efficiency.

[90 Chamfering Degree]: Precision ground 90 degree tip for countersinking most machinable metals like aluminum, woods, rubber and plastic.

High Quality Material: The countersunk bit is made of high-quality carbon steel, and the surface is plated with titanium, rust-proof, strong, durable, and able to serve you for a long time.

Industrial Grade Countersunk Drill Bits: 90-degree holes are accurately sunk into wood, plastic, and even countersunk screws. The five-slot design achieves anti-chatter and anti-vibration effects, stable operation and better cutting results.

Practical Design: 1/4 inch hexagon shank countersunk bit is suitable for most electric tools, which is convenient for quick replacement during use, saves your time and energy, and helps you to complete the work accurately and quickly.

Widely Application: Suitable for wood opening, reaming, chamfering, etc. It is widely used for chamfering various soft materials such as wood board, aluminum board, fiber board, particle board, plastic and PVC board.

PACKAGE INCLUDES: There is 14pcs drill bits in your package, and two pieces of each style. Product size: 5mm/0.19', 7mm/0.27'', 8mm/031'', 11mm/0.43'', 14mm/0.55'', 17mm0.66 inch , and 125mm/4.92 length free hex shank wrench. Sufficient tool set can help you and your partners to complete the work quickly.

Number of items: 13

✯ [PREMIUM MATERIAL]-This countersink drill bit set is made of premium high carbon steel with excellent heat treatment to ensure high hardness, sturdy and durable;

✯ [DIMENSION]-The 5-flute countersink drill bit set offers 3 head diameters in the package: 12 mm (1/2''), 16 mm (5/8''), 19 mm (3/4'')

✯ [UNIVERSAL 1/4” HEX SHANK]- All drill bits have a universal 1/4” hex shank, fitting most power tools; The cutting edge is hardened and honed for sharpness. all drill bits have a 90 degree angle on the point for sharp and precise countersinking.

✯ [WIDELY-USED]- This 3 PCS countersink wood drill bit set is ideal for wooden planks, fiberboard, particle board, plywood, plastic, aluminum board, PVC board and more. Great for wood openings, reaming, chamfering, screw head, etc.

✯ [EXCELLENT CENTER PUNCH]- Made of high quality HSS, this automatic center punch is the tool you need to create an indentation in working materials to help screws and drills to stay in place and resist from straying off center from your drill point. Great for drilling jobs, positioning steel, aluminum, iron, PVC, steel, walls, wood, etc.

Made of carbon steel, high hardness and practical, has a long service life.

With 1/4" quick change hex shank.

Suitable for opening holes and chamfering of all woods and soft metals.

This countersink set is great for sinking 90 degree holes into wood and soft metals in preparation of countersunk screws and fixings.

Size: 10mm/0.39", 13mm/0.51" (Approx.)

TRI-POINTED DESIGN: The tri-cuspid countersink make sure drills will not produce offset, not easy to slip, good for accurate and fast drilling. The five-edged chamfer design of the countersink drill helps to remove chips from the holes on both sides automatically and quickly

HIGH CARBON STEEL : MOHOO Countersink drill set is made of high and carbon steel which offers solid countersink, sharp drill bits with high hardness and good abrasion resistance

REMOVEABLE& ADJUSTABLE: The countersink bits are easily adjustable with the included hex key wrench which makes it convenient to adjust the depth of the bit before the countersink hits the material

PACKAGE CONTENTS: One set of countersink drill bits comes with 7 pieces of countersink drill bits in 7 size, #3 #4 #5 #6 #7 #8 #10mm, and 1 piece of L-shape hex wrench included

MULTIPLE USES: This countersink drill bits set is widely used in woodworking projects, softwood & hardwood, fiberboard, particle board, plywood, plastic, PVC and soft metals

Countersink Drill : Countersink drill bits are made of high carbon steel and offer superior cutting power. High hardness and wear resistance, convenient and fast to drill a hole.

Werkzeug Design: Come with a hey key, perfect to remove five bevel chamfer or adjust counter sleeve depth and drilling depth for screws of various lengths.

Three Pointed Design: Three Pointed design can quickly and accurately drill a hole. Edge sharpness and smooth drilling.

Five Edged Chamfer: Quickly discharge chips from the hole on both sides automatically. It can effectively prevent the accumulation of debris retention, improve the drilling efficiency.

Enjoy Werkzeug Tool: The Countersink Drill Bit Set is includes 1 piece of hex key and 7 pieces of countersink drill bit in 7 different sizes to satisfy all you demand.