This 9 reversible 2 jaw gear puller makes removal of slide gears, pulley, and flywheel off the shaft simple and damage free. They are constructed fom forged , hardened steel for strength and longevity. Steel drive screw is cold-rolled and acme threaded to give smooth performance even under high stress. Product Features:Material: SteelSpread9Reach: 5.50Capacity: 7 TonsCenter Screw Size: 0.59 x 8.38Chrome Plated Jaws