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