For Marking Cut Lines on Smooth Surfaces, Such as Plastics and Glass
CRL Stabilo Marking Pencil not only writes on glass and paper, but also on metal, plastics, ceramics, porcelain, stone, film, painted or lacquered surfaces, and just about any other glossy surface. They are erasable from paper and marks will wipe off of glossy surfaces with a damp cloth. Used by more glaziers than any other marking pencils.