Wera 7870 Joker Self Setting Insert Spanner for X and XP Click Torque Wrenches

The Wera 7870 Joker Self Setting Insert Spanner is a clever, self-adjusting tool designed for use with Wera Click-Torque X and XP series torque wrenches featuring a 9x12 mm mounting. Available in three sizes — S, M, and L — covering wrench sizes from 10 mm through to 19 mm, this single tool replaces multiple fixed spanners by automatically and continuously setting itself to the required size the moment it is placed on a hexagon bolt or screw head.

The integrated lever mechanism clamps the fastener securely between the parallel, continuous jaws, greatly reducing the risk of slippage or rounding. A built-in mechanical ratchet allows for fast, consistent screwdriving without needing to remove and reposition the tool, and the corner-width rectangular prisms deliver a compact 30° return angle for use in restricted spaces.

Features and Benefits:
• Self-setting jaws automatically adjust to the correct size on contact with the fastener
• Replaces multiple single-size spanners — covers all metric and imperial dimensions in the respective field of application
• Integrated lever mechanism clamps securely, reducing slippage and damage risk
• Mechanical ratchet functionality for fast, uninterrupted screwdriving
• 30° return angle using corner-width rectangular prisms for use in confined spaces
• Laser-engraved, abrasion-proof QR code for easy torque value reference
• 9x12 mm square head insert for compatibility with Click-Torque X and XP series wrenches