Wera 05020100001 Joker 6004 7/16 in. - 1/2 in. S Self-Setting Spanner

Item No. 31094
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Wera 05020100001 Joker 6004 7/16 in. - 1/2 in. S Self-Setting Spanner has continuous and parallel jaws that replace several single spanner dimensions. The required size is automatically and continuously set when attaching the tool to the hexagon bolt or screw. The integrated lever mechanism securely clamps the hexagon screw or bolt between the jaws, which significantly reduces the risk of slipping or damage. The ratchet function ensures fast and consistent screwdriving without removing the tool. Thanks to the corner-width rectangular prisms, a return angle of only 30° can be realized. The single-arm design in conjunction with the ratchet function and the corner-width prism make it possible to work even in confined spaces. The adjustable Joker 6004 is the universal screwdriving tool. Self-setting. Gripping. Spanning.


  • The adjustable joker 6004 covers all metric and imperial dimensions in the respective field of application
  • Automatic and continuous grip of hexagon screws and bolts
  • Lever mechanism when gripping avoids slipping and damage
  • Fast and consistent screwdriving without removing the wrench thanks to mechanical ratchet function
  • Return angle of only 30-Degree through placement in the corner-width rectangular prisms in the mouth
  • Automatically and continuously self-setting
  • Gentle to the screw
  • Useful hole for hanging


Model Number05020100001
Wrench Size7/16 in. - 1/2 in. (10 mm - 13 mm)
Total Length154 mm
Head Thickness10 mm
Weight132 g