Looks like that's an addon too though. Found this ball hitch bushing for $0.75 - https://www.amazon.com/Connor-Towing-1613350--Reducer-Bushing/dp/B01456B6PW/ref=sr_1_17?s=automotive&rps=1&ie=UTF8&qid=1473289781&sr=1-17&refinements=p_85%3A2470955011%2Cp_n_is-min-purchase-required%3A5016683011