The Trimax TCP100 Keyed-Alike Towing Kit provides ultimate protection for work and play. This trailer lock kit comes with a universal trailer lock, an adjustable coupler/door latch lock, and a universal receiver lock, all in a durable carrying case. All locks are keyed alike so one key fits all three. UMAX100 Universal Trailer Lock â One size fits all from 1-7/8" to 2-5/16".TC123 Adjustable Coupler/Door Latch Lock â Solid stainless steel pin. Fits 7/8", 2-1/2", and 3-1/2" spans. TS32 Universal Receiver Lock â 1/2" pin easily converts to 5/8" pin. Two Keys and Carrying Case â Kit comes complete with two rugged keys that won't bend or break and a durable carrying case. Latch Lock with stainless steel pin fits 7/8"", 2-1/2"", & 3-1/2"" spans Receiver Lock with 1/2"" pin that converts to 5/8"" pin Includes carrying case & two rugged keys that won't bend or break | Trimax TCP100 Keyed-Alike Coupler/Receiver Locks Towing Kit