1、The roof rack of the luggage version is fixed between the grooves of the luggage rack to enhance stability. 2、It does not need to be dismantled repeatedly, can be placed continuously after one installation, and will not cause damage to the roof. 3、Rear wheel fixed pad, two arcs, suitable for different models, hook and loop strap can easily bind the crank to prevent pedals from wearing the roof. 4、Small in size, does not occupy space, and can effectively reduce wind resistance, convenient installation, easy to use, with quick release lever. 5、With multiple functions, you can fix the bicycle on the truck, the rear of the car roof, and take your bike with you when you are free. Item Type: Bike Fork Mount Material: Aluminum Alloy+Rubber Front Mount Size: Approx. 16x8cm/6.3x3.1in Rear Mount Size: Approx. 10.8x7.5cm/4.3x3.0in Weight: Approx. 618.0g/21.8oz Installation: 1 Fix the roof front mount to the car luggage rack. 2 Install the front axle of the bicycle on the roof frame. 3 Place the rear wheel pad on the car luggage rack. 4 Fix the rear wheel of the bicycle. 5 Fix the crank with hook and loop strap to avoid scratching the car paint. 6 After the installation is complete, you can start. 1 x Front Fork Mount 1 x Rear Wheel Fix Pad 1 x Hook and Loop Strap 1 x Manual 1 x Inner Hex Wrench 12 x Gasket 5 x Inner Hex Screw 2 x Cross Screw