Description:- Gear-wheel with safety locking mechanism and quick release button 2-colour-multilayer insulation (yellow, red) for easy identification of insulation damages VDE insulated up to 1.000V, Conforms to EN60900/IEC 60900:2004 Elora-Chrome-Vanadium 31CrV3 / 1.2208 square drive Conforms to DIN 3120-A 12,5, ISO1174, with ball locking device