The OEMTOOLS 27115 Serpentine Belt Tool Kit makes it easy to service vehicles with spring-loaded serpentine belt tensioners. This mechanic tool kit gives you the leverage and reach needed to release tension on self-adjusting idler pulleys during belt removal and installation. Tools for mechanics includes a 3/8-inch square drive handle that provides extra torque in tight engine bays, plus a 1/2-inch drive adapter for added versatility. The OEM TOOLS kit features four shallow sockets (13 mm, 15 mm, 16 mm, 18 mm) and three crowfoot sockets (13 mm, 14 mm, 15 mm) to cover a wide range of makes and models. Whether you're replacing a worn serpentine belt or working around the accessory drive system, this tool saves time and reduces frustration. All components are stored in a sturdy molded plastic case for easy transport and storage. Built for mechanics, technicians, and DIYers, this serpentine belt tool set delivers the power and precision needed for efficient belt service in any garage or shop.