14MM TO 3/4" RATCHETING SERPENTINE BELT WRENCH Releases tension on spring-loaded idler pulleys Approx. 15-1/4"L Great for servicing any belt-driven accessory Ratcheting wheels allow easy positioning of wrench and direct access to tensioner (idler pulley) from any angle. No need to remove engine accessories or frame components. Professional quality-heat-treated nickel-chrome-plated steel. Will fit any vehicle with corresponding hex head or square drive size (most common applications mentioned).