3M™ Diamond Grade™ Conspicuity Markings Series 983 and 3M™ Flexible Prismatic Conspicuity Markings Series 963 are highly reflective and are pre-coated with an aggressive pressure sensitive adhesive for application to most clean, dry, wax-free, non-corroded, weather resistant surfaces. The adhesive is protected by an easy-release liner. 3M™ conspicuity markings are intended to be applied to the side and rear perimeter of vehicles in a continuous stripe to enhance visibility and recognition by motorists. Markings can be applied to flat surfaces (with and without rivets) and non-compound curved surfaces with a radius greater than 5 inches. For application to corrugated vehicles, apply the marking to the bottom and top rails or between corrugations if adequate flat surface is available. Application is not recommended to rusted or corroded metal, loose or chalking paint, irregular shaped framework, bolts, rivets larger than 1/2 inch high, support plates, corrugations within 1/8 inch of door hinges, exterior posts, weld joints, the end of the vehicle surface or within 3 inches of mandated lights, reflectors or turn signals.