1/2" Drive adapter included. Handle has a 3/8" square drive for extra leverage. Comes in a sturdy blow-mold storage case. Four shallow 13, 15, 16 and 18 mm sockets. Services a variety of vehicles equpped with a serpentine accessory drive belt. Serpentine belt tool includes long handle and four shallow 13, 15, 16, and 18 mm sockets. Handle has a 3/8-Inch square drive for those jobs requiring extra leverage. A 1/2-Inch drive adapter is also included. Comes in a sturdy molded plastic storage/carry case. Provides the required leverage and clearance to release the spring pressure and remove the tensioner pulley.