Wiha's Professional Series 3/8” Drive Impact Sockets are available in SAE or Metric. Impact Tough - Built from heat-treated steel for maximum durability and long life in high-torque applications. Impact Ready - Engineered for all impact drivers and optimized geometry for perfect fit and reduced cam-out. Impact Proven - Tested to withstand the toughest fastening jobs on the jobsite. Relieved 6-point corners provide more contact area and grip. Manganese phosphate finish for corrosion resistance. ¼” Hex to 3/8” square adapter included in the set. 360° Swivel Socket Strip – Rotating design keeps sockets visible, accessible, and securely in place. Integrated storage for the 1/4” hex to 3/8” adapter makes this a grab-and-go solution for any job site or toolbox.