Measurement scales (in. on front mm on reverse) are handy for sizing nuts, pipe and tube diameters. Non protruding jaw with thinner jaw profile permits easier use in more confined spaces. Ergonomic handle is wider for a more comfortable grip CHANNELLOCK adjustable wrench is made of chrome vanadium construction with (2NL-1CR) coating. It's designed with perfectly parallel jaw surfaces grip safely and reduce possibility of damage. NO sacrifice was made, you have comfort and durability in one!