The Sure-Tight wires attach the holder to your vehicle in the safest possible way. Quick and easy adjustment to adapt the holder to fit the car using the smart FitDial system. The cast rubber cushions give the holder good support against the vehicle and protect against scratches. Elastic material cradles secure the bikes in the holder and act as dampers against shocks and vibration. The No-Sway holders prevent the bikes from swinging and coming into contact with each other or the car. The narrow cradle arms are suitable for a large number of bikes including those for small children, and can be folded away when not in use. Cycles can be locked into the carrier, which in turn can be locked onto the car (lock included). Folds flat for easy handling and storage. Use a Thule Bike Frame Adapter 982 to transport bikes with frame types that are difficult to fasten on some bike racks (e.g. ladies' bikes, BMX's and downhill bikes). This product does not fit all cars. Use the Thule Buying Guide for information on products suitable for your car.