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 - 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. Utilizing the corner width prisms enables a return angle of only 30°. The single-arm design combined with the ratchet function and corner width prism allows for work in tight spaces. The adjustable Joker 6004 VDE features a pleasant grip thanks to the two-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.