This Trailer Adaptor Kit is designed to work with CONDOR®'s Pit Stop / Trailer Stop chock, (PS-1500). Simply mount the low profile kit to the floor of your trailer, and the Pit-Stop / Trailer-Stop wheel chock is ready to be attached in seconds with eye bolts and only one thumb screw. Many customers get an extra one to easily change the placement of their motorcycle in their trailer. Designed to work with CONDOR®'s Pit Stop / Trailer Stop Chock. Also designed for use with CONDOR®'s Chopper Chock (CHCK 1500). Easy installation.