CURT class 2 receiver hitches are ideal for towing lightweight trailers or adding cargo room to your car, crossover or minivan. The 1-1/4" x 1-1/4" hitch receiver accepts the included ball mount for towing a small boat trailer or utility trailer (trailer ball sold separately). It can also be used to mount a hitch cargo carrier or bike rack. This particular class 2 trailer hitch is rated for 3,500 pounds gross trailer weight and 350 pounds tongue weight (Note: Never exceed the lowest-rated towing component, whether the vehicle, trailer or other towing accessory). Because a receiver hitch is constantly exposed to the outdoor elements, Curt protects theirs with an industry-leading, dual-coat finishing process. First, Curt trailer hitches are mechanically and chemically descaled of imperfections, creating a smooth, ready-to-finish surface. Next, we apply an initial coat of liquid Bonderite®. Each hitch is literally submersed in a Bonderite® bath that completely covers every surface, inside and out, with a rust-resistant shield. Finally, a durable powder coat is applied over the top, and the two layers are cured together for industry-leading rust, chip and UV resistance. Safety is the first priority in any towing adventure, but the best trailer hitch is one that you shouldn't have to think about. All CURT receiver hitches are rigorously tested to the highest standards in the automotive industry. We test each hitch design to SAE J684 protocols at Curt's in-house research and development facility. They undergo multi-faceted testing and are exposed to real-world conditions for a proven design. This trailer hitch for Buick / Oldsmobile comes with an open-back receiver for easy cleaning, and it is backed by Curt's limited lifetime warranty for peace of mind. It also includes mounting hardware for a complete installation and a hitch pin to attach the included ball mount.