Belt Installation Tool With this tool and the correct serpentine belt tool for the job, installing those almost impossible serpentine belts is a lot less frustrating and time-consuming. The two-pin hook end holds the belt for precise placement, and the handle gives you the grip you need to maneuver it around the pulleys easier. It’s also a handy tool to have around for installing V-belts and timing belts that are never in easy-to-reach places. 25" long. No. – Belt installation tool.