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. 5-Ton, Long 2-Jaw (Reversible Jaws). Max. Reach 5-1/2 in. Max. Spread 6 in. Screw Size 9/16 in. - 20 x 6-15/16 in. Jaw Thickness Upper 5/16 in. Lower 1/4 in. Jaw Width Upper 3/8 in. Lower 3/4 in.