Towever 2" Class III/IV Trailer Hitch Tri Ball Mount with Hook (Hollow Shank, Black&Chrome) Our tri ball mount fit class III/IV 2 inches hitch receivers. including Curt, Rola, Yakima, Inno, Draw-Tite, Blue Ox, Hidden Hitch, Thule, Tulga, U-Haul and other brands. Three attached chrome trailer hitch balls sized 1-7/8 inches, 2 inches & 2-5/16 inches and one durable tow hook for towing strap Up to 200 pounds tongue weight and gross towing weight of 2000 pounds for 1-7/8 inch hitch ball, 600 pounds tongue weight and gross towing weight of 6000 pounds for 2 inch hitch ball, 1000 pounds tongue weight and gross towing weight of 10000 pounds for 2-5/16 inch hitch ball and 10000 pounds gross towing weight for towing hook, setup for truck, pickup, tractor with 2 inch standard hitch receiver or drawbars. 7-1/2 inches Length Hollow Shank and 12" overall length for this trailer hitch ball mount Use 5/8 inches Hitch Pin or Lock.(not included)