104591A Fits CATEGORY II HITCH LIFT ARM BALL RB006 OLIVER TRACTORS OTHERSOne New Aftermarket Replacement Category II Hitch Lift Arm Ball for Oliver, White, and Minneapolis Moline Tractors This Category II lower link ball (also called a lift arm ball) mounts in the 3 point hitch lift arm of Oliver, White, and Minneapolis Moline tractors with claw type lift arms. It provides the pivot connection between the lift arm and Category II implements, keeping the 3 point hitch operating reliably in the field. Zinc plated for