TRACER ACM2 Construction Lumber Crayons Markers (12pk) - Red12pc Crayon Marker Set Red TRACER Crayon Markers provide universal and high visibility marking. Suitable for a variety of worksite materials when wet and dry surfaces, FEATURE BULLETS Universal construction crayon marker. High visibility marking, perfect for darker surfaces. Mark on a wide array of materials including wood, plastic, tile, metal, concrete, brick and glass. Able to mark on both wet and dry surfaces. Featuring a bold 3 6mm width tip