This set combines Tekton’s complete 3/8 inch drive crowfoot wrenchesthe ultimate access tools for fitting into tight spacesand flare nut crowfoot wrenchesthe most optimized tool for engaging with 6-point fittingsinto one master set. All of the wrenches are finished with an electroless nickel plating process that offers several key advantages, including complete corrosion protection on interior surfaces and a better fit in the jaws, as the plating material doesn’t accumulate at the tips as with conventional chrome plating. Additionally, the electroless nickel process has a lower environmental impact since it doesn’t require the use and disposal of chromium. The set comes with four compact and easily portable racks to organize the wrenches. We make all of the crowfoot and flare nut crowfoot wrenches in this set entirely in the USA with USA-sourced materials. The steps of machining, broaching, engraving, vibration polishing, abrasive blasting, and plating all take place locally at Tekton’s Grand Rapids, Michigan manufacturing facility.Features: Lean Design We optimized both the crowfoot and flare nut crowfoot wrenches for access and strength by using steel only where it matters and eliminating the excess 6-Point Flare Nut Jaw Our deep, 6-point design maximizes your contact with fittings and prevents slipping 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 wrenches Clear Markings The wrench sizes are laser engraved on each tool with large, permanent markings that are easy to read