how many inches is a class 3 hitch?
A Class III hitch has a larger 2-inch receiver and draw bar, and is good for up to 7,500 pounds with a tongue weight between 350 and 600 pounds. You can use a 1-7/8-inch or 2-inch ball, but now you need to be sure you have a 1-inch shank. Class II hitch, which is identifiable by its 1-1/4-inch receiver and draw bar, is good for trailers up to 3,500 pounds with 300 pounds of tongue weight.