The Lisle Spark Plug Starter Set, No. 63100, features a 9" flexible shaft that allows technicians to obtain the desired angle to accurately install most spark plugs, without cross threading. The 3/8" square drive socket includes a strong neodymium magnet to hold the spark plug in during installation and removal. The tool can also be used as a magnetic pickup tool with a weight capacity of 1.56 lbs. The set includes four spark plug sockets: 9/16", 5/8", 3/4" and 13/16". Made in the U.S.A.