Details : Features rack-level, dial-activated clamp, push button-clamp release and sleek, sculpted wheel tray Easy loading; sculpted wheel tray and support arm clamp work together and help keep bike in position when securing your bike to the carrier Simple-to-use rack-level adjustment dial closes clamp around bike tube for ultimate transport stability Unloading the bike is a breeze with fast, push-button clamp release Low-profile wheel tray and dual-action wheel strap fits a variety of tire sizes without the need for an adapter (up to about 2.6" wide) Accommodates bike frames up to 3-3/8'' diameter Made from durable anodized aluminum, steel and rubber Please note: As is, this rack fits square and round load bars only. This bike carrier requires the use of Xadapter XADAPT8 when used on Aeroblade & Rapid Aero Bars (sold separately). This is a USED condition item. *Used items are complete and fully functional. Pictures are representational (your rack may not have similar markings). Instructions and tools needed for assembly may not be included.