•Lean Design – We optimized our crowfoot wrenches for access and strength by using steel only where it matters and eliminating the excess•Exceeds Performance Standards – Tekton 3/8 inch drive crowfoot wrenches greatly exceed the ASME B1074.100-2020 strength requirements for minimum proof torque•Satin Finish – Our crowfoot wrenches are made from 4140 chromium-molybdenum steel that's heat-treated to 50-54 HRC and abrasive-blasted for a finely textured finish•Electroless Nickel Plating – Our plating process ensures a uniform, corrosion-resistant finish across the entire surface of the crowfoot wrench•Clear Markings – The wrench sizes are laser engraved on the top surface of each tool with a large, permanent marking that’s easy to read.