With the Road-Max Blade-Runner 4, the arm can fold when not in use for gate access. It has a compact and light weight design that allows the user to easily store product in the car trunk. The adjustable padded arm supports the bikes vertically and the strong, easy to use, locking attachment system will fit any 2" receiver. Also includes high resistance wheel straps with zamack buckles and soft pads to fit all rims and tire sizes. This model is able to carry up to 4 bikes.