Puller removes balancers, pulleys, and gears with tapped holes. Floating swivel prevents damage to the shaft end. Four slots in the yoke allow for 2 or 3-hole applications. Tool bolts to balancer with center screw on the end of the crankshaft. Tighten while tapping on the screw head to remove balancer. Puller includes 3/8-24 UNF, 5/16-18 UNC, 3/8-16 UNC and 10mm x 1.5 screws for most American and imported cars.