For transmission drain and fill plugs on Volkswagen and other German vehicles. Male 17 mm hex body socket. For use with 3/8" drive ratchet. Heat treated and zinc plated alloy steel. 17 mm X 3/8" Square Dr for Removing and Installing Volkswagen Transmission Drain Plugs. 3/8" Female Square Dr. and 17 mm Male Hex, Cr-V Steel. Heat Treated and Zinc Plated Finish. Socket Size: 1-1/4" (diameter) x " (length).