The CURT 2-5/16 Inch trailer ball does not mess around. Simply put, it is a solid piece of towing equipment that makes all others look like they're just spinning their wheels. CURT 2-5/16 Inch 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 Inch trailer ball to match. This 2-5/16 Inch trailer ball features a ball capacity of 25,000 Pounds. It features a 1-1/4 Inch shank diameter, a 2-5/8 Inch shank length, 2 Inch of rise and a raw steel finish to protect against the elements. To give you the power you need to tow with confidence, CURT 2-5/16 Inch trailer hitch balls are thoroughly tested for safety and meet U.S. VESC specifications.