Features and Benefits: The full range of 3/8" drive impact sockets have become very popular recently in the automotive service industry; Interestingly enough, however, mechanics continue to buy mostly 1/2" drive impact wrenches because they prefer the power and performance over the 3/8" counterpart; These two incongruent trends tell those of us who manufacture and sell automotive tools and equipment that there is a significant opportunity to sell 1/2" F x 3/8"M impact adapters now and in the future; Black coating provides rust prevention; Added Versatility; Impact Extension Adapter, 1/2 in. Drive, 36 in. Long, Reduces to 3/8 in. Drive.