Countersink bits in comparison

Material:HSS(High Speed Steel)4241, Titanium Coated Application:Ideal for cutting through metal,wood,plastic and thin iron plate (hardness

【4 Pieces Countersunk Drill Bit Set】This countersunk drill bit set contains 4 different sizes of drill bits, 2.8mm and 3.2mm center bits, which match the 8mm 82° four-flute countersink drill; 3.5mm and 4mm center bits, matched with 10mm 82° 4-flute counterbore drills.

【6PCS Countersink Drill Bit Set】This complete set includes 4 HSS tapered countersink bits (2.8mm, 3.2mm, 3.5mm, 4.0mm centre drills), each paired with an 82° 4-flute counterbore (8mm for 2.8/3.2mm bits; 10mm for 3.5/4.0mm bits). Also includes a 1/4" hex shank extension handle and a hex wrench for quick bit changes. Ideal for precise woodworking, cabinetry, and multi-diameter drilling applications.

Material: Made from High-Speed Steel for superior strength and durability.

【Nitride Coating HSS for 3X Longer Life】Crafted from high-speed steel with a durable nitride coating, these countersink drill bit sets are built for extended durability.

DIN335 HSS Form C 90° 25.0 mm

3in1 Countersink Drill Bit Set – Enable you to Drill, Countersink and Counterbore in one step, ideal woodworking tools for setting screws flush with or below the surface of a material Meet All Your Needs–5 packs of Countersink drill bits assortment in size #6 (2.5mm), #8 (2.8mm), #10 (3.2mm), #12 (3.5mm), and #16 (5mm) for perfect centered Screws Holes in both Soft and Hard Wood Easy To Use–3 sharp edged 82-degree chamfer design Counter sink bits built with 6mm Hex Shanks with groove for quick size changes without bit slipping, compatible with most electric drills and tools Drilling Depth Adjustable– Working length of the pilot drill bit is adjustable for precise depth control; hex wrenches included for changing or tightening the pilot drill bits Compatible with More Materials – Pilot bits are made of high quality M2 steel, countersink bits make of high carbon steel, able to drill in hard wood, soft wood, plywood, plastic; Please use a drill bit one size smaller in soft wood

Package Include-----Total 6pcs/set: diameter 6.3/8.3/10.4/12.4/16.5/20.5mm; total length 45/50/50/56/60/63mm; blade length 6/8/9/10/13/17mm; round shank Application-----Drilling (countersinking) and chamfering of surfaces of stainless steel (1MM thickness and below), copper, aluminum and other metals, wood and plastics (slower drilling speed is recommended for stainless steel).

Wide Applications: Suitable for drilling and countersinking in wood, plastic, PVC, fiberboard, particleboard, plywood and more. Ideal for carpentry, cabinetry, furniture making, home repairs and DIY projects.

Packaging Configuration: This product is a practical 6PCS combination countersink drill bit set, including six specifications of 6.3mm, 8.3mm, 10.4mm, 12.4mm, 16.5mm, and 20.5mm, which are suitable for different hole chamfering needs.

1. Countersink Drill Bit Set for Clean and Flush Screw Seating. This countersink drill bit set combines drilling and countersinking in one operation, helping screws sit flush with the surface.

[Precision Countersinking Performance] Designed to create clean, professional screw finishes, this countersink drill bit helps screws sit flush or slightly below the surface, improving both appearance and safety. The smooth cutting action reduces splintering and surface damage, making it ideal for neat furniture assembly, cabinetry work, and general DIY tasks.