Made of the high quality HDPE plastic textured. They are not fragile as GRP plastic, which sometimes can break during installation. Our Fender Flares are very flexible and very easy to install (can be screwed into the edge of the fender with screws. We sell a set of 4 undrilled fender flares without screws. Here – fender flares which widen by ca. 4 inch (10cm). Great Price these come to You in the Black Colour as Pictured.