The serpentine belt tool set is the perfect tool for tensioning, installing or removing serpentine belts with spring-loaded idler pulleys. This toolset can be used to service a variety of vehicles equipped with a serpentine accessory drive belt. The set provides the required leverage and clearance to release the springs\' pressure and remove the tensioner pulleys. Delivery includes 1 handle with 3/8\" square drive, 1 handle with 1/2\" square drive, 3 shallow sockets (15 mm, 16 mm, 18 mm) and 3 crowfoot wrenches (13 mm, 14 mm, 15 mm).