CURT 2-5/16\" trailer balls are made with expert engineering to be packed with strength and durable enough to withstand the harsh wear of heavy-duty towing. Anything your class 5 trailer hitch and class 5 ball mount can handle, CURT has a 2-5/16\" trailer ball to match. These tow balls are perfect for towing all types of heavy receiver-style trailers (NOTE: Never exceed the lowest weight capacity of any towing component; i.e. the vehicle, hitch, trailer, etc). This 2-5/16\" trailer ball features a ball capacity of 15,000 lbs. It features a 1-1/4\" shank diameter, a 2-5/8\" shank length and a stainless steel construction to protect against the elements. To give you the power you need to tow with confidence, CURT 2-5/16\" trailer hitch balls are thoroughly tested for safety and meet U.S. VESC specifications.