This special application version of the original Puller is designed to access the 12-tooth gear that can sometimes fail on the PSC HO 20-ton Shay. It is also useful on similar small jobs. 1.7" x 1.5 x .5" body, 5/8" outside diameter; maximum press depth is 1-1/4". Includes allen wrench, 3/32" tip press screw, #4552-4 1.2mm press tool and #4553-4 1.2mm press tool.