Specifications include, but are not limited to: Reflective Class “A” Type 1-A Mono- directional white reflector face with the marker body other than the reflector face shall be white, silver white or a neutral color. (The size will be 4”x4”) Reflective Class “A” Type 1-B Mono- directional yellow reflector face with the marker body other than the reflector face shall be yellow in color. (The size will be 4”x4”) Reflective Class “A” Type 2-A Bi- directional 2 white reflector faces with marker body other than the reflector faces shall be of a white, silver white, or a neutral color. (The size will be 4”x4”) Reflective Class “A” Type 2-B Bi- directional 1 white reflector and 1 yellow face with marker body other than the reflector faces shall be of a white, silver white, or neutral color, or may be ½ yellow on the side with the yellow reflector and ½ white, silver white, or a neutral color on the side with the white reflector. (The size will be 4”x4”)