Our tools are fabricated from 4140 steel heat treated to a hardness of Rockwell 42, then plated for corrosion protection and lubricity. They are individually customized for exact fit, and delivered in a custom-designed case with foam inserts to protect your investment and make accounting for individual tools easier. Original Beechcraft wrenches have a single bend for clearance when in use. Our wrenches have double bends to obtain the needed clearance, but the required torque is "in plane". This helps prevent the wrench from "camming out" of the hex socket.