Newly Designed "Pneumatic" Bead Breaker. Loosens tire bead from the rim with leverage. Excellent for working on the tire without removing the wheel. Newly designed hook is reversible to work on a larger rang of rim/flanges. Will handle much wider range of tire from automotive tires and up. For More Information on the Pneumatic Bead Breaker From ESCO, Model #20429 or visit this link http://bit.ly/16Dpdq3, please call 1-800-352-9852 to find an ESCO Distributor near you. Operates with impact wrench and or air ratchet wrench. 5" Stroke