THIS PRODUCT IS MANUFACTURED BY HAND, SPECIFICALLY DESIGNED FOR USE ON TRACK AND RACING, IT IS SUPPLIED RAW, AS SEEN IN THE PHOTOS. WARNING: NOT DEVELOPED FOR ROAD USE! Racing product in fiberglass fabric, (in all our articles we do NOT use coarse flaked fiberglass, but only that in the form of woven fabric, for a better final quality of the product). Externally they have a black or white gelcoat, internally they are made with fabric impregnated with a special thermosetting polyester resin, which hardens by catalysis, this resin has been studied with the collaboration of experts to guarantee great lightness and flexibility to the hulls. Our fiberglass products need to be drilled, the points where to drill the holes are marked. it is possible to add special quick release screws (for racing use) which can be purchased separately on our website.