STAEDTLER 318 3 Lumocolor Permanent Pen, Fine Line Width, 0.6mm Blue (Box of 10)

Euroffice

Pen for overhead projector film and other glossy surfaces. Permanent ink for lasting use. Dry-Safe ink for up to 2 days cap-off time. Fast drying ink prevents smudges. Works on CDs, glass, plastic, metal, porcelain, wood, leather and OHP film.

Amazon

Universal pen for use on overhead film and almost all surfaces Dry safe - can be left uncapped for days without drying up (ISO test 554) Good smudge-proof and waterproof qualities on almost all surfaces Fine line width approximately 0.6 mm