• Combines the convenience of the push-button adjustment on the workpiece and the function of an all-purpose tightening tool • For use with inch and metric nuts and screws with widths across flats from 3/8" to 1 1/4" - self-locking in the range from 11/16": no slipping off the workpiece • Reliable and tight gripping of rounded, rusty or overly painted nuts and screws • 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, one-hand operation • 15 fine adjustments of optimum adaptation to different size workpieces and a comfortable gripping position • Box-joint design: high stability because of double guide • Reliable catching of the hinge bolt: no unintentional shifting • Replaces a set of wrenches, ideal for tightening locknuts • Pinch guard prevents operators' fingers being pinched • Favorable lever action: optimum transmission of force • Chrome vanadium electric steel; forged, multi stage oil-hardened