Lumocolor Guarantees professional and effective presentation on all overhead transparencies. This universal pen can be used on most other glossy surfaces, including CDs, glass, plastic, metal, porcelain, wood, and leather. The ink is water-soluble and can be wiped from film with a damp cloth. Fast-drying ink prevents smudges. Features a fine 0.6mm tip. The barrel colour is clear. Available in single colour packs of 10, wallets of 4 assorted (red, blue, green and black), wallets of 6 assorted (red, blue, green, black, orange, brown) and wallets of 8 assorted (yellow, orange, red, purple, blue, green, brown, black).