Writes on steel, glass, aluminum, plastic, wood, rubber, pallet racking...virtually any surface! Simple to remove with only Windex or water and a cloth. No permanent marking or damage on any cured or non-porous surface. Fast drying ink...a rain-resistant barrier forms after approximately 1/2 hour. Developed specifically for the auto body & refinishing industry Great for marking repairs and estimates Featuring a 5mm tip and available in 6 colors. Perfect for versatile applications...Dress up the windshield of your front line with sales messages or use in the service/body shop department for marking repair needs. Doesn't damage the paint of the vehicle! Improves in-shop communications by assigning different colors to each department or individual to identify what has been or needs to be done. Productivity increases as there is no wasted time finding files or instructions, therefore increasing your profit margins. Facilitates seamless communication in your shop. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.