Piece-tested tool according to IEC 60900 at 10,000 V for safe working at the approved voltage of 1,000 V. The adjustable VDE open-end wrench automatically and continuously grips all hex sizes within the specified dimension range - both metric and imperial. The integrated lever mechanism securely clamps the hex screw or nut between the jaws, significantly reducing the risk of slipping and damage. The ratchet function allows for quick and continuous screwing without repositioning. By utilizing the corner width prisms, a return angle of only 30° can be achieved. The single-arm construction combined with the ratchet function and corner width prism enables work in tight spaces. The adjustable Joker 6004 VDE features a pleasantly tactile grip thanks to the 2-component plastic insulation. Safety is enhanced by the anti-slip protection at the front end of the handle. Additional protection is provided by the sliding function for contactless and safe opening of the non-insulated jaws.