Trailer Hitch Pin Fastway Trailer Products 86-00-3160 Fits 2-1/2" Ball Mounts, 5/8" Diameter, LockingTrailer Hitch Pin; Fits 2 1 2 Inch Ball Mounts; 5 8 Inch Diameter; Locking; With 2 Keys When you are heading out for some fun, you want to be sure that your trailer stays safe while you are gone. Fastway locking hitch pins with drill resistant barrel locks cannot be false locked and the weather resistant O rings and rubber dust caps help keep ice and water out of the locking mechanism. Compatibility: 2 1 2 Inch Receiver Hitch Type: Barbell Pin