Staedtler 316 WP8 Lumocolor Non-Permanent Pen - Fine Line 0.6mm - Assorted Colours - Pack of 8

Euroffice

Universal pen for use on almost all surfaces. Water-soluble ink can be wiped from film with damp cloth. Works on CDs, glass, plastic, metal, porcelain, wood, leather and OHP film. Fast drying ink prevents smudges. Fine 0.6mm tip. Barrel colour: Clear.

Amazon

Universal pen for use on overhead film and almost all surfaces Can be wiped off film using a damp cloth Fast drying ink with superb colour brilliancy Supplied in the handy stand-up desktop box Fine line width approx. 0.6mm