CURT class 2 ball mounts are all made with 1-1/4" x 1-1/4" shanks and have a 3/4" trailer ball hole. A CURT class 2 ball mount is an excellent choice for full-size sedans, minivans, crossover SUVs and other vehicles that commonly use a class 2 trailer hitch (NOTE: Never exceed the lowest weight capacity of any towing component; i.e. the vehicle, hitch, trailer, etc). This CURT class 2 ball mount has a gross trailer weight capacity of 3,500 lbs. and a tongue weight capacity of 350 lbs. It measures 11-1/4" long and has a rise of 3-1/8". It also comes with a highly durable black powder coat for long-lasting defense against rust, UV damage, scratching, scuffing and chipping. Material: Carbon Steel.