Product details:

COPIC markers are versatile double-ended refillable markers with fast-drying, permanent non-toxic ink. The original COPIC marker is ideal for calligraphy, airbrushing and graphic arts applications. The square, rounded-edge barrel features a broad nib on one end offering smooth, consistent coverage for large areas, while the fine nib on the other end allows for easy detail work. Both nibs are replaceable.