DOBPLAST reflector 6003 red round reflector Ø 60 mm with hole The DOBPLAST 6003 reflector is a passive, reflective, round visibility and safety marking element with a diameter of 60 mm and a central mounting hole for fixed mounting on trailers, cars, vans and commercial vehicles. The red reflective surface provides improved visibility in road traffic, while the E20 IA homologation allows for use in accordance with standards.