The Universal E-Track Adaptor Kit is designed to be used with either a Condor Pit Stop/Trailer Stop, 910-331 the Condor Simple Chock Trailer-Only model 910-333 It allows these chocks to quickly and securely attach to the E-Track on any trailer platform, whether the E-Track is flush-mounted, recessed, or above the floor You can adjust the position of the Condor Chock anywhere along the E-Track for maximum flexibility in positioning a motorcycle, and it will adjust side-to-side between 27" and 46" wide Ratchet tie-downs are required for transporting the motorcycle