Thule T2 Pro X Add-on 904650The Thule T2 Pro X 904650 is a add on for a hitch bike rack meant to allow a 4 bike total capacity. It secures bikes without frame contact to prevent damage to the bikes. Its Ratcheting arm secures bike to the rack in a easy and safe way. This add-on is the ideal choice for most bikes! It rack add-on can accommodate 20’’-29’’ wheels, and up to a 3’’ width without the use of adapters. Made for 2’’/50mm receivers only.091021756380