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. 1041 13-Ton, 2/3-Jaw Max. Reach 11� Max. Spread 12� Screw Size 13/16��16 x 12� Jaw Thickness 9/16� Jaw Width 1�