The Orange Stabilo Pencil Crayon (Grease Pencil) is nontoxic and writes on glass, plastic metal and any smooth surface. Wipes off with damp cloth. Used by Camera Assistants to place focus marks on lens barrels. Acid free and pH neutral.
WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.