Features Wera's tough viscous and ACR design, for Phillips screws, PH 2 x 70mm blade x 1/4" drive With Reduced Shaft for tighter fit applications For AEG, ARO, Atlas-Copco, Biax, Black & Decker, Bosch, Buckeye-Tools, Chicaco Pneumatic, Cleco, Deprag, Desoutter, Gardner-Denver, Hios (Ferra-Tools), Hitachi, Ingersoll-Rand, Iwema (Fuji Air Tools), Keller, Makita, Mall, Metabo, NPK-Air Tools, Pneutec, Rockwell, Rotor Tool, Skil Tool, Stanley, Thor Power-Tool, Tohnichi, Uryu (UPT-Weiler), Van Dorn, Virax, and Wolf hexagon drives Wera's Anti Cam-Out Ribs (ACR) are designed to prevent bits from slipping out Limited Lifetime Warranty, German Engineered