Drive: DIN 3120, ISO 1174, style A 6.3 + A 10.Drive: With 1/4" hex shank according to DIN 3126 C 6.3.Application: Drilling, cutting threads and burring. For assembly work, repair and rethreading.Application: Can be used in metal and plastic.Bits: Reduced, over-tightened profile.Extra: Three applications in a single work step. Particularly sutiable for use in battery-powered drivers.Material: High-quality HSS steel, ground.Packaging: Blister packed.For universal applicationsDIN 3126, ISO 1173, Style C6,3