3M™ Diamond Grade™ Flexible Prismatic Markings Series 973 are designed to mark a wide variety of vehicles for which enhanced visibility is needed. These markings are highly retroreflective and conformable in design, allowing for application in a variety of applications to meet general and industry specific requirements.3M Diamond Grade Flexible Prismatic Markings Series 973 are designed to mark a wide variety of vehicles for which enhanced visibility is needed. This highly retroreflective marking consists of prismatic lenses that are formed in a transparent, synthetic resin, sealed and backed with an aggressive pressure sensitive adhesive and paper liner. It's conformable design allows for application to smooth surfaces, and around rivets and corners. It is available in a variety of colours and configurations to meet general and industry specific requirements such as FRA (railcar), NFPA1901 (emergency vehicle ), FMVSS and CSA D250 (school bus).