Description:

5Pcs 5 Flutes 6-12# Carpentry Countersink Drill Bit Set 1/4" Hex Shank Woodworking Pilot Screw Holes. Countersink drill bit is made by heat treated and tempered titanum coated high speed accuracy more high. The countersink drill bit have self-starting point and five-fluted design eliminates chatter and vibration for smooth operation to make clean, accurate and burr-free cuts.. Standard 1/4 inch hex shank is quick change compatible and has an adjustable counter sleeve depth with Allen wrench, for flush screw heads or deeper to cover with matching plugs. Suitable for:Soft metal, insulation board, wooden planks, plastic, soft metals, fiber board, particle board, plywood, alumiumn board etc..