This product features a bi-hex with AS-Drive profile and a 1/2″ internal square drive; sizes 16 mm–5/8″ and 20.8 mm–13/16″ include a rubber insert for spark plugs; manufactured from HPQ® high performance steel with a chrome-plated finish and conforms to DIN 3124 / ISO 2725-1 / DIN EN 3710 / DIN EN 3709 / ASME B 107.5M standards.








