... types: SDS-plus, Hex, Quick Change Hex Shank, etc. Wood auger bits.Auger Bit Manufactured from hardened high carbon steel.Hex shank ... open throat provides quick clearance for chips. Prevents clogging.For wood boring hand brace.Size: Diameter 16mm-40mm,Length 100mm-660mm ... treatment: Black&White, Color Painted, Black oxided, Tin-coated. Auger bits