CURT 40083 Stainless Steel Trailer Hitch Ball, 6,000 lbs., 2 Inch Diameter Tow Ball with 1 Inch x 2 1 8 Inch Shank ball WDTW) Engineered with a vehicle specific Size:5 on 4.5" WDTW) Engineered with a vehicle specific design for a custom fit Concealed main body for OE look and seamless integration with the vehicle Tested for safety in accordance with SAE J684 Precisely welded for superior strength and fit Constructed with a large a CURT class 2 trailer hitch complements the design of smaller vehicles VESC specifications These tow balls are an excellent extension of your class 3 or class 4 trailer hitch and ball mount