Wera 6004 Joker Self Setting Adjustable Spanner

The Wera 6004 Joker Self-Setting Adjustable Spanner is the ultimate universal screwdriving tool, designed to replace several individual spanner sizes in a single, intelligent instrument. With its continuous and parallel jaws, the Joker automatically and continuously sets itself to the required size the moment it is attached to a hexagon bolt or screw — covering both metric and imperial dimensions with ease.

The integrated lever mechanism securely clamps the fastener between the jaws, significantly reducing the risk of slippage or damage to the workpiece. A mechanical ratchet function allows fast, consistent screwdriving without ever needing to remove the spanner from the fastener.

The corner-width rectangular prisms deliver a back-pivoting return angle of just 30°, and the single-arm design makes this spanner perfectly suited to confined or restricted spaces. Available in sizes from 115mm to 320mm to suit a wide range of applications.

Features and Benefits:
• Self-setting jaws automatically and continuously grip hexagon screws and bolts
• Covers all metric and imperial dimensions within each model's range
• Integrated lever mechanism prevents slipping and protects the fastener
• Mechanical ratchet functionality for fast, consistent screwdriving without removing the spanner
• 30° return angle using corner-width rectangular prisms for use in tight spaces
• Single-arm design ideal for confined working environments