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. No. 1042 13-Ton, Long 2/3-Jaw Max. Reach 15-1/4� Max. Spread 17� Screw Size 13/16��16 x 12� Jaw Thickness 9/16� Jaw Width 1�