The purchase is for a set of luggage guards for the above bike model. The guards feature removable skid plates can be inexpensively replaced without purchasing a new set of steel guards. They also feature four attachment points on each side to prevent them from rotating in the event of a low side. We use highest grade commercially available 12.9(177,000 psi in tensile strength) wherever possible. Rest assured that you are getting the best material commercially available.