The Channellock 12" Reversible Jaw Extra Wide Adjustable Wrench, No. 812PW, features a reversible jaw designed to make simple work on bolts and fasteners as well as on round stock. The self-gripping angled teeth design grips pipe and rounded fasteners tightly. With a four thread knurl and non-protruding jaws, the 812PW offers improved capacity while improving performance in confined spaces with its minimal head width. The wrench is constructed with chrome vanadium steel for durability.