The Heininger Advantage SportsRack Trailer Hitch Lock is great for securing your bike rack or trailer to the hitch. It has a 0.625 diameter and fits 2 x 2 trailer hitches (Class III and Class IV). Its inside width is 2.625 and has an overall length of 6. The weather-resistant lock features a covered key opening for added durability. It also comes with two keys for your safety and convenience. Product Features:Pin Diameter 5/8, Inside width 2-5/8, overall length 6 (Class III and Class IV)Patented, pick-proof screw and lock securityFlush locking designMade in the USA
