General description The Laser Tools Chain Adjustment Hook Wrench is a specialized tool designed for precise chain tension adjustments on motorcycles. It features a 120mm jaw width and allows for accurate adjustments by turning the eccentric in the swingarm after loosening the pinch bolts. This tool is particularly useful for Ducati and Triumph motorcycles. Technical specifications Jaw width: 120mm Overall length: 340mm Equivalent to Ducati OEM 88713.1038 Compatibility and accessories Applications: Ducati and Triumph For 125mm Chain Adjustment Hook Wrench (equivalent to OEM 88713.3211), use Laser Part No. 6929