Easy to use Pentouch Calligrapher Fine (1.8mm) Paint Marker 4PC Set (Gold, Silver, Copper, Black) was developed to enhance writing experiences of any skill level. Doodles, swirls and detailed flourishing script is possible on a variety of surfaces. Paint flows from the chamber directly to the tip of the marker. A quick shake before writing mixes the color. Pentouch Calligrapher pens feature archival quality ink chemically stable, waterproof and fade resistant. Paint flows directly to the tip after a quick shake, permanent adherence to most surfaces and writes on glass, wood, porcelain, plastic, paper and metal. Applicable for invitations, greeting cards, memos and letters, name cards and signs, gift tags and pottery. Technical qualities are rich opaque results, permanent adherence to most surfaces, low odor and xylene free, meets ACMI non-toxicity standards, not recommended for use on fabrics intended to be washed, on food service or ceramics that are washed and not evaluated for cosmetic use on skin.