Features 1、These countersunk drills are made of carbon steel with high hardness, providing excellent cutting power and durability. 2、The 3‑point design can accurately locate and drill a smooth hole quickly and accurately. 3、With edge chamfer design, it can automatically and quickly discharge chips from the holes on both sides. 4、Easy to use the combination of hex key to adjust or disassemble the countersink drill bit and the 5‑flutes chamfering. 5、Used for bench drills, hand drills and conventional electric drills, suitable for drilling holes in fiberboard, particleboard, plywood, plastics, etc. Specification Item Type: Countersink Drill Bit Material: Carbon steel Drill Bit Diameter: Approx. 3mm / 0.12in 4mm / 0.16in 5mm / 0.2in 6mm / 0.24in Purpose: Used for drilling Applicable Scenarios: Used for bench drills, hand drills and conventional electric drills Package List 4 x Countersink Drill Bits 1 x Hex Wrench