Wera Joker 6004 XS Self-Setting Spanner is designed to replace multiple single spanner sizes with its innovative continuous and parallel jaws that automatically adjust to fit hexagon bolts and screws. This tool minimizes the risk of slippage or damage by using an integrated lever mechanism that securely clamps onto fasteners. Equipped with a ratchet mechanism, it enables fast and consistent work without the need to remove the spanner from the bolt or screw. Its single-arm design, combined with corner-width rectangular prisms that create a return angle of only 30°, makes working in tight or confined spaces easier and more efficient. Model Number: 05020099001