Lisle 57900 Serpentine Belt Tool. Releases Tension on Serpentine Belts with a Spring Loaded Idler Pulley. Used to remove and install belts on serpentine belt systems using a spring loaded idler pulley. Will reach where conventional ratchets or breaker bars won't. Fits pulleys requiring 13mm, 15mm, 16mm, 18mm hex and both 3/8" and 1/2" square drive sizes. Also comes with an extension that can be bolted on and set in 11 different positions for hard to reach areas. Covers most all applications.
