OTC (1025 Mechanical Grip-O-Matic Puller - 5 Ton, Long 2 Jaw (Reversible Jaws) 5 ton capacity, long 2 jaw, reversible jaws Maximum reach of 5-1/2 inches Maximum spread of 6 inches Upper jaw thickness is 5/16 inch, lower jaw thickness is 1/4 inch Upper jaw width is 3/8 inch, lower jaw width is 3/4 inch