Steel tool with 24" handle, for Bolt-On security to pinion using U-Joint bolt holes, the two sets of slots are .56" wide by 1.5" long and .34" wide by 1-3/8" long, used to hold the rear end pinion yoke while tightening or removing the pinion nut
Quicker and easier way of changing pinion seal, re-bushing the case or simply torquing the pinion nut