he MASTERPIECE 660PI CoversAll marker provides a constant ink flow. It comes filled with alcohol-based CoversAll black ink and is refillable. The tip is easily replaced once worn. CoversAll ink is alcohol and synthetic bitumen based, pitch black, permanent, highly opaque, UV and weather-resistant, fast drying and suitable for both indoor and outdoor use.
Known among it users as one of the most permanent inks available on the market.