Kage Racing X815 Three Bike Plus Tow Tongue Rack Carrier for Standard 2" Hitch A trailer ball can be added in order to tow up to 2,000 pounds max trailer weight; the ball is not included Carries three adult bicycles; including racing, mountain and touring bikes This bike rack was made with all steel components that have been powder coated for weather resistance The cradles are made of rubber so as not to scratch your bike There are places where you can add a lock (lock is not included) on this bike rack so as to better secure your bikes