Editorial Review The Class III Ball Mount a 8 drop or may be inverted for a 6 rise. Fits into 2 x 2 receivers. Drop: 8 Rise: 6 Ball Hole diameter: 1 Pin Hole Diameter: 5/8 Drop Capacity: 5,000 lb. GTW / 500 lb. TW Rise Capacity: 3,500 lb. GTW / 350 lb. TW