THIS IS 1 YELLOW OR AMBER JEWEL / REFLECTOR. IT HAVE METAL BACKS WITH A STUD AND NUT BOLT SO CAN BE USED ON FENDERS, MUD FLAPS, HUB SHINERS OR SEATS. THE RED REFLECTOR IS MADE BY GLASS. THEY ARE 1 INCH WIDE AND LOOK JUST ASTONISHING, THEY HAVE THE COOL DIAMOND CUT DOME SHAPE, THEY LOOK FANTASTIC.