This Curt 50mm trailer ball is constructed from high-strength steel to match the towing power of your class 1 or class 2 trailer hitch and ball mount. It comes with fine threads on the shank for improved holding strength. Having a trailer ball that matches your coupler size is absolutely essential. At Curt, our trailer balls are engineered to be precisely fitted. This one is designed for European-style couplers, featuring a 50mm diameter. It has a ball capacity of 1,600 kg. and is able to tow most small utility trailers, boat trailers and teardrop campers (NOTE: Never exceed the lowest weight capacity of any towing component i.e. the vehicle, hitch, trailer, etc). As with any trailer, be sure that your towing equipment is capable of handling the load before hitching up. This Euro trailer ball also features a 3/4" shank diameter, a 50mm shank length, 0" of rise and a chrome-plated finish to protect against corrosion and wear. Like all Curt trailer balls, our 50mm hitch balls are tested for your safety and meet all U.S. VESC specifications.