CURT heavy-duty welded ball mounts are the pinnacle of the receiver-style ball mount design. They are built from CNC-formed steel and are robotically welded to be strong, clean and precisely fitted. These ball mounts have the towing power to match our class 5 hitch line, offering a gross trailer weight capacity of 15,000 lbs. and a tongue weight capacity of 1,500 lbs. This makes the heavy-duty ball mount a perfect fit for the heaviest trailers to hit the road, including small yacht trailers, double-axle utility trailers, toy haulers, car haulers, RVs and more (NOTE: Never exceed the lowest weight capacity of any towing component. i.e. the vehicle, hitch, trailer, etc.).This particular CURT heavy-duty ball mount comes with 3" of drop, 1-1/2" of rise and has a length of 9-1/2". It is equipped with a 1-1/4" trailer ball hole and features a 2-1/2" x 2-1/2" shank. To keep our class 5 ball mounts well protected, we coat each one in a durable gloss black powder coat finish. This makes them rust-resistant, scratch-resistant and UV-resistant for a long-lasting towing solution. No matter where you find yourself every day -- the construction site, the industrial park or the open fields -- when you need towing equipment that will work as hard as you do on the job, trust CURT heavy-duty. Our class 5 ball mounts are tough as nails to make heavy-duty towing look easy. They are the perfect complement for your full-size pickup, SUV, flatbed or other commercial truck.