This socket features a bi-hex profile with AS-Drive design and a 1/2″ internal square drive. Sizes 16 mm – 5/8″ and 20.8 mm – 13/16″ are equipped with a rubber insert for spark plugs. It is manufactured from HPQ® high performance steel and chrome-plated. It complies with DIN 3124, ISO 2725-1, DIN EN 3710, DIN EN 3709, and ASME B 107.5M standards.








