High Temp 44: Designed with a valve action mechanism that allows the marker tip to be re-inked, even when the cap is left off. Marker barrel is threaded so it can be secured in a jig or apparatus for continuous marking applications. Unique cap design features a clip that prevents the marker from rolling and can easily be secured to a clip board or in your pocket. Drying Time: 45 seconds - 1 minute. Ideal for marking on glass, metal and ceramic. Each color represents a temperature range