The AMP Lock T-BRP-2516501 is a trio kit that contains: 1x BRP-2516; 1x HLP-58 and 1x CC50-1. The 3x locks are keyed alike and comes with a total of 6 keys. The kit offers a complete protection for 2-5/16’’ straight lip trailer coupler with 2x2 hitch receiver tube as it will protect the trailer when hitched and unhitched. The BRP-2516 protects the trailer when unhitched. The HLP-58 protects the hitch either if the trailer is hitched or unhitched. The CC50-1 protects the trailer when hitched and unhitched. This trio kit fits on specific 2-5/16’’ trailer coupler: fig 3B and 14. This kit can be keyed alike with all Amplock locks from Ultimate and Standard Plus Series.