SKU 72870336 - CURT 2 5/16" trailer balls are made with expert engineering, packed with strength. They are durable enough to withstand the harsh wear of heavy-duty towing. CURT has a 2 5/16" trailer ball to match. This 2 5/16" trailer ball features a ball capacity of 7,500 lbs. It features a 1" shank diameter, a 2 1/8" shank length, 0" of rise and a nickel-chrome finish to protect against the elements. More