The KNIPEX 10 in. Raptor Pliers can be used on both inch or metric nuts and screws with widths across flats from 3/8 in. up to 1-1/4 in. (10 mm to 32 mm) self-locking in the range from 11/16 (17 mm) with no slipping on the workpiece. Zero-backlash gripping of inch and metric hexagonal head screws no rounding of screw heads. Reliable and tight gripping of rounded, rusty or overly painted nuts and screws ideal for work on vehicle brake system. Ideal for work on vehicle brake systems. Quick tightening of nuts and bolts using ratchet action. Adjustment at the touch of a button directly on the workpiece, 1-handed operated. Fine adjustment for optimum adaptation to different size work pieces and a comfortable gripping position. Box-joint design: high stability because of double guide. Reliable catching of the hinge bolt: no unintentional shifting. Favorable lever action: optimum transmission of force. Pinch guard prevents operator's fingers being pinched. Replaces a set of wrenches, ideal for tightening locknuts. Made of chrome vanadium electric steel, forged, oil-hardened.