Used for metric and imperial nuts and screws, with widths across flats from 10 to 32mm (3/8 - 1 1/4"). Self-locking from 17mm with no slipping on the workpiece. Box-joint design with double guide for stability. Lever action allows optimum transmission of force. Fine adjustment for adaptation to different sizes of workpieces, with comfortable handle width. Max. Jaw Opening: 32mm Drop-Forged, Heat-Treated & Hardened Chrome Vanadium Steel Jaws PVC Dipped Handles Locking Box Joint 15 x Locking Jaw Positions Max. Jaw Opening: 32mm Drop-Forged, Heat-Treated & Hardened Chrome Vanadium Steel Jaws PVC Dipped Handles Locking Box Joint 15 x Locking Jaw Positions