This 1 ounce bottle of black refill ink is designed for use with Pilot Super Color Permanent Markers. Super Color Permanent Marker Ink provides vivid, dense writing that's clearly visible from a distance. The fast-drying, permanent ink will write on most surfaces including wood, plastic, metal, and glass - virtually anything. The ink is waterproof so it dries instantly! Refill your Super Marker today and reduce waste, and save money.