Measurement scales (in. on front mm on reverse) are handy for sizing nuts, pipe and tube diameters. Perfectly parallel jaw surfaces grip safely and reduce possibility of damage. Non protruding jaw with thinner jaw profile permits easier use in more confined spaces. Ergonomic handle is wider for more comfortable grip. Chrome Vanadium Steel Construction with (2NI-1CR) Coating. Exceeds ASME B 107.8 M, B.S. 6333 and DIN 31117 standards. SPECIFICATIONS: Length (in): 10 Length (mm): 257 Capacity(in): 1 3/16 Capacity(mm): 29 Weight(oz): 14.81 Weight(g): 420 Head Width(in): 2 51/64 Head Width(mm): 71 Head Thickness(in): 5/8 Head Thickness(mm): 16 Tip of Jaw Thickness(in): 5/16 Tip of Jaw Thickness(mm): 8 Handle Thickness(in): 15/32 Handle Thickness(mm): 12