2-5/16" Trailer Ball - 1" x 2-1/8" Shank - 7,500 lbs - Stainless SteelThe CURT 2-5/16" 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" 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 a 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, including dump trailers, toy haulers, farm trailers, chopper boxes, dual-axle utility trailers, deluxe RVs, small yachts, and more. (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 7,500 lbs. It features a 1" shank diameter, a 2-1/8" shank length, a 0" rise, and a stainless steel finish to protect against the elements. To give users the power to tow with confidence, CURT 2-5/16" trailer hitch balls are thoroughly tested for safety and meet U.S. VESC specifications.Features:Fits 2-5/16" couplers and accepts up to 7,500 lbs. GTWStainless steel construction for excellent rust resistanceZinc-plated hex nut and helical lock washer for secure mountingFeatures fine threads for superior holding strengthTested for safety to meet U.S. VESC V-5 specificationsSpecifications:Ball Capacity: 7,500 lbsBall Diameter: 2-5/16 in.Color: StainlessFinish: Polished StainlessHub Warehouse: D25Material: Forged SteelPart Type: 2 5/16 in. Trailer BallShank Diameter: 1 in.Shank Length: 2 1/8 in.Shank Rise: 0 in.Torque: 250 ft. lb.Warranty: Limited lifetime warranty (one-year finish, one-year parts)*The mounting platform must be at least 3/8" thick, and the hole size must not be more than 1/16" larger in diameter than the threaded shank