When you want the highest quality scribe marks and bold, clear markings, you probably shouldn't use any old marker or some kid's crayons. This is why we feature these premium ITW Dymon products. Toluene-free Dykem Steel Blue layout fluid can be used on metal surfaces to give a uniform color so scribe marks will be precise and clear. Their Dykem Brite-Mark permanent markers provide bold lettering on practically any surface. They're oil based and quick drying for indoor or outdoor use. These are just a few of the many products ITW Dymon manufactures. The Dykem brand began in 1920 with their layout fluid, which is the industry's most popular brand. Dykem is a division of ITW (Illinois Tool Works).