Topeakmart Bike Pickup Truck Bed Rack Bicycle Mount Carrier Designed for use with up to four bikes of varying rim/wheel size. Fits comfortably in both full size and compact size truck beds, secures fully assembled bikes with rim sizes ranging up to 29.5inch Soft padding included to protect bike finish-won't scratch truck paint. Secures along the inner walls of your truck bed,twist stabilizers into place with wing nut screws. Utilizes adjustable rubberized lateral stabilizers,assembles quickly, with no tools required.