Saris MHS Duo Add-On platform bike rack connects quickly and easily to any MHS Base. DUO Dual-arm design provides the ultimate bike carrying versatility compatible with the widest wide range of bikes including e-bikes fat bikes fender bikes and step through. Zero frame contact bike protection and super stable bike transport. Dual-arm design provides superior bike protection and limits potential of bike to bike contact. Tool-free adjustable wheel block accommodates wheel sizes from 20 to 29 inches and tires as wide as 5 inches. Fully locking with integrated steel cable that stores conveniently in tray. Fast easy and secure mounting to MHS Hitch Base (Base sold separately). Accommodates wheel bases up to 53`. Carries 1 bike up to 35 lbs