Enough for 1 bike (1 set of 2). The back has double sided tape, so you can install it easily after sticking. (Please remove dirt before sticking) As this is an imported product, there may be some small scratches that may occur during transportation. Caution: The customer is responsible for the factory fee, etc. associated with installation. ■This product is an imported product, so there may be some stains or scratches. The color of the product may look different depending on your monitor.