Loosens tire bead from rim with leverage. Excellent for working on tire without removing the wheel from the tractor. Typical Application: ATV, lawnmower, farm tractor, backhoe tires, Dimensions L x W x H (in.): 10 x 5 x 4 1/2 Handles 38in. and 42in. 14-ply tires with drop-center rims Operates with a ratchet wrench (not included)