Complete set of Rear Wheel Discs, including all necessary mounting materials. Alloy and stainless steel. Surface treatment: stainless steel chromed. The supplied rear wheel discs are mounted in the rear wheel, it is necessary to remove the rear wheel from your bike, in order to mount the discs.Rear Wheel Discs stainless steelfor rear wheel in chromed stainlesssteel- simply bolt on cover rims too- and comewith valve extension too- 2 year guarantee