This purchase is for a set of luggage guards for the above bike model. The guards feature skid plates that can be inexpensively replace without purchasing a new set of steel guards. The steel tubing has two attachment points and braced together 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.