The hitch ball diameter(A) must be the same diameter as the trailer coupler (1-7/8", 2", or 2-5/16") The shank diameter (B) of the hitch ball should be the same as the hole diameter in the (correct) ball mount you selected. The shank length (C) should be long enough to allow at least two threads to be visible when the hitch ball is installed and the nut completely tightened. The standard lift (D) refers to the height of the hitch ball base. The lift raises the top of the ball height above the draw bar.
		A. Ball Diamter B. Shank Diameter C. Shank Length D. Standard Lift

Always use the properly rated hitch ball for your towing system.

• Your towing system’s maximum weight rating is always equal to the lowest rated item in the system
• Your hitching system cannot be upgraded to a rating higher than the maximum rating of your hitch

For example: a 3,500 lb. ball on a 2,000 lb. max trailer weight rated hitch does not increase your towing capacity to 3,500 lbs. Your hitching system is still rated at 2,000 lbs.

Conversely, a 2,000 lb. ball on a 3,500 lb. max trailer weight rated hitch decreases your maximum towing capacity to 2,000 lbs.