DOBPLAST reflector 7603 red round reflector Ø 76 mm with hole The DOBPLAST 7603 reflector is a passive, reflective, round visibility and safety marking element with a diameter of 76 mm and a central mounting hole for fixed mounting on trailers, cars, vans and commercial vehicles. The red reflective surface provides improved visibility in incident light, while the E20 IA homologation allows for standard-compliant use in public road traffic.