Disc brake aluminum bicycle rear shelf. Suitable for mountain bikes, road bikes and folding bikes. Easy to install and use. Adjustable height can fit for the height of the disc brake. Made of high-quality aluminum alloy, it is and strong. Awesome bicycle accessories. Installation location: the pillar below the bicycle seat (the bicycle itself has holes for installation) One set of Bicycle shelf only, other accessories demo in the picture is not included! Specification: Type: Bicycle shelf Colour:black Material:Aluminum alloy Package Contents: 1 * Bicycle Rear Cargo Rack Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.