The Wera 6004 Joker S is the 155mm self-setting adjustable spanner, offering a versatile and well-balanced size for everyday fastening tasks. Spanning fastener sizes from 10–13mm and 7/16–1/2″ imperial at an overall length of 154mm, this model is an outstanding all-round choice for both professional tradespeople and workshop use. The Joker’s intelligent self-setting jaw mechanism automatically adjusts to the correct size the moment you engage the tool with a hexagon bolt or screw — covering metric and imperial dimensions without the need for manual setting. The integrated lever mechanism then clamps the fastener securely, greatly reducing the risk of rounding or slipping. With its mechanical ratchet feature, you can drive fasteners quickly and consistently without removing the spanner. The 30° return angle and single-arm design allow effective working in restricted and confined spaces. Features and Benefits: • Self-setting jaws automatically grip hexagon fasteners across metric and imperial sizes • Lever mechanism securely clamps fasteners to prevent slippage and damage • Mechanical ratchet for continuous screwdriving without removing the tool • 30° return angle using corner-width rectangular prisms • Single-arm design suited to confined working environments Contents: 6004 Joker S Self-setting spanner, 10–13mm x 7/16–1/2″ x 154mm Specifications: • Configuration: 155mm