The following diameters: 6.3/8.3/10.4/12.4/16.5/20.5mm;With handle and bit holder for electric screwdriver or drills;'With bit shaft 1/4, Angle 90, three edges, from HSS;In strong ABS box, good Countersunk Replacement Mir good lifetime;For steel, mild steel, non-ferrous metals

• 4mm Countersunk Replacement 6.3-20.5mm with Bit, 90 Shank HSS Set 8Pieces with Bit Holder and Handle, In ABS Box

4mm Countersunk Replacement 6.3-20.5mm with Bit, 90 Shank HSS Set 8Pieces with Bit Holder and Handle, In ABS BoxBohrcraft