1-TON, GRIP-O-MATIC PULLER - Mechanical Grip-O-Matic Puller. Remove and install parts for fast, effective repairs. The puller is forged from quality steel, heat treated, and subjected to rigorous tests which exceed their rated capacity. 1-Ton, 3-Jaw - Max. Reach 2-1/8" Max. Spread 3-1/4" - Screw Size 5/16"-24 x 3-7/8" - Jaw Thickness 9/64" Width 1/4".