Clamp-on designCarbon fiber composite increases aestheticsStrong and long-lastingLighter than conventional filter topsWashable and reusableThe RP-5164 Universal Air Filter is constructed from an oiled cotton filter media. It comes with a K&N embossed carbon fiber top for strength and durability. The carbon fiber element adds to the light-weight design and gives this filter a smooth glass like finish. K&N RP-5164 is a clamp-on filter that has an inside flange diameter of 1-15/16 inches and a flange length of 5/8 inches. The base diameter and height of the filter is 3 inches.