Professional Tools Warranty Included Description - 9pc Impact Extension Bar Set Brand - US PRO INDUSTRIAL Heavy duty impact design 1/4, 3/8 & 1/2 Drive Chrome Molybdenum Steel construction Black phosphate anti corrosion finish For use with air tools Sizes - 1/4 Drive x 50, 100, 150mm 3/8 Drive x 45, 75, 150mm 1/2 Drive x 75, 150, 250mm Please Check Out Our Other Items