Feature●Features Weras Extrahard and torsion form design, for Phillips screws, PH 2 x 1/4"Drive●For hexagon bit holders and direct drives, with 25mm blade●For Fein, Bosch, Holz-Her, Metabo, and Lecurex hexagon drives●Wera Extra hard bits for soft materials (e.g. wood and general construction materials) are made from a special material that extends the tools service life and reduces the risk of material damage●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. Made with the Torsion form for minimizing premature wear. Wera ? The Best Tools For The Job!