3M™ Diamond Grade™ Conspicuity Markings Series 983 are highly retrorflective micro-prismatic markings designed to mark the sides and rear of vehicles for enhanced visibility and detection. The reflective marking consists of prismatic lenses that are formed in a transparent synthetic resin, sealed and cracked with a pressure-sensitive adhesive clear poly liner. Applied to properly prepared surfaces Diamond Grade markings should provide seven years of field performance.Information provided by 3M |