The XLC PD-X15 grip tape set is a spare for the tape found on PD-C11 flat pedals. The small sandpaper strips are applied to both sides of either pedal to the top, bottom, and centre of the pedal surface. Having a spare set like the XLC PD-X15 is useful in the long run, as after sustained use, the strips will begin to wear down and gradually become less effective. Always keep the grip by having a few of these strips in your spare kit arsenal. Grip tape like this for the PD-C11 flat pedals is useful as, like on a skateboard, it is designed to improve traction on the surface. This means that in non-traditional cycling footwear, you can still find traction on the pedals.