Feature:1. Main body made of high strength aluminum alloy, fine workmanship plating paint, extend service life, make the shelf more practical, strong, lightweight.2. According to different requirements, telescopic installation, adjustable design increases universal performance, basically conform to most of mountain bikes.3. Detachable side wing, can removed when not needed, guard bar structure, easy to install luggage bag, effectively prevent luggage bag and tire friction.4. The top of the support clamp is fixed with screws, which can adjusted according to the size of the rear screw, easy to install, and greatly improve the general performance.5. Adopts rhomboid support clamp, versatility and firmness improved comprehensively, after installation, two small triangles are supported, immunity to swinging from left to right is more obvious. For disassembly, hex wrench is neededSpecification:Condition: Brand NewItem Type: Bike RackModel: WJ01Material: Aluminium AlloyColor: BlackWeight: Approx. 1000gSize: Approx. 50cm or 19.69inchStructural decomposition:Scratch-resistant gasketBike rack surfaceBike rack surface adjusting screwRear lightMain bodyMain body quick release headSide wingFixed support rod screwFixed support rodBike Rack adjustment:1. First loosen the three screws under the main body with an inner hex wrench2. After the screw is loose, can adjust the angle of installation, and choose the angle suitable for your own needs to tightenSupport rod installation1. Each support clip is equipped with a gasket, the role is to protect frame, installation must be placed in the correct position2. After the gasket is placed correctly, clamp the support clamp on the rear of frame and the upper pipe, screw on the screw, tightening is also need to pay attention to the gasket pad to the correct position3. After installing the support clamp, loosen the screws on the support rod to adjust the length of the support rod4. Tighten the screws and washers after adjusting the height, and then tighten the screws used to adjust the length of the support rodBoth sides and rear light mounted1. The two side wing mounting frames are mounted on the front and rear screw holes2. The two side wing directly mounted with screws and gaskets3. After blocking the reflector, check it again(angle, screw, gasket, etc.).Package List:1 x Bike Rack6 x Scratch-Resistant Gasket6 x Bike Rack Surface Adjusting Screw6 x Nut7 x Accessory1 x Rear Light2 x Side Wing4 x Fixed Support Rod1 x Hanging Rope