Product Description Pozidriv insert for 1/4" . Technical Information:Blade Material:chrome-silicon-manganese-molybdenum steelSocket Material:CrV steelDrive:1/4"Length:33 mmSizes (PZ):PZ 1 / PZ 2Manufacturer Numbers:PZ 1:23733PZ 2:23735Contents:1 x Manufacturer: PROXXON S.A. Härebierg 6-10 6868 Wecker Luxembourg office@proxxon.com