REESE TOWPOWER 7008100 Hitch Ball, 1-7/8 in Dia Ball, 3/4 in Dia Shank, Steel
Combined with interlock ball mounts, provide a one wrench tightening system. Place the hitch ball shank through the hole of the ball mount, align the hex shapes and tighten to specification. When installing, torque all 3/4 in shank balls to 160 ft-lb. and all 1 in to 250 ft-lb.