Feature●Features Weras TRI-WING design for TRI-WING screws, 8 x 5/16" drive●For hexagon bit holders and direct drives, 35mm blade●For Buckeye Tools, Demag Pokorny (FMA), Desoutter, Fiam, Grasso, Rupes, and Suhner hexagon drives●For TRI-WING screws●Limited Lifetime Warranty, German EngineeredDescription Wera Bits are designed for the most demanding applications in trade and industry. They are designed to have the ability to transfer high torque loads, safe to use and extremely durable. Wera ? The Best Tools For The Job!