Shuttle Art 160 Glitter Gel Pen pack contains 80 unique gel pens with 80 matched refills.Pens in this set are all with glitter powders which can meet the special requirement for glitter lovers. All of glitter gel pens are contain more Ink: 220% ink in each gel pen. One pen equals 2.2 other brand’s pens. There is also a additional replacement pack of refills. Extra garantee make sure your longer using. Humanized Design: Soft grip design makes coloring more comfortable. And each refill bag is labeled the same to the matching pen tray makes customer easy to find the correct replacement refill. Long lasting smooth writing non-toxic acid free conforms to ASTM-D4236 which makes it great for Adult book Coloring Scrap booking Doodling Drawing and other art projects.