SKS X-Blade Rear Fender The SKS X-Blade Rear Fender comes in multiple sizes to accommodate whatever wheel size you're running. It mounts to your seatpost, and provides sturdy, lightweight protection from roost, water, and whatever else you romp through on your ride. You can adjust its height and angle with standard Phillip's head screwdrivers, and the clamp is compatible with a range of seatpost diameters. Features Material Plastic/ Steel Mount Seatpost, fits most standard sizes | Sks | X-Blade Rear Fender | Black | 28"/29"/plus