Thule Apex XT Hitch Bike Carrier. Features: A premium hanging hitch bike rack line providing superior bike protection and multiple size options to fit the needs of two people or an entire family Offers the most space in the category with 7" in between bikes to accomodate wider tires and larger frames Quick to install and lock to vehicle using the Snugtite stinger which includes a lock Integrated cable lock secures bikes to the rack Arms fold down when not in use Apex XT model folds down to allow backdoor access and Apex Swing XT model features a swing away design allowing backdoor access even with bikes in place Specs: Model:4 bike Color:black/silver Receiver:2" and 1.25"