This is a brand new vented quarter turn gas cap made proudly in the U.S.A. by the Kelch Corporation. This quarter turn gas cap is 10 inches long. These gas caps have the chimney style vent in the center of the gauge face. They work on the old metal tanks, this is not a threaded gas cap. This gas cap will work on any quarter turn fuel tank that is at least 10 1/4″ deep. Any questions, email us or call the shop at 517 787 0477.