Allen Model 303db Deluxe Spare Tire Mounted 3-Bike Carrier: * Single configuration design eliminates headaches during set up and installation. * Patented tie-down system individually secures and protects bicycles.15 long carry arms easily accommodate up to 3 bicycles. * Fully assembled - sets-up and installs in seconds. * Not for use on any type of trailer. See our entire assortment of bikes and ride on toys at Walmart.com.