Gelly Roll Metallic-set of 12 colors Features ?Roller-ball pens, water based gel ink, acid free, water, fade and chemical proof ?Archival quality ink, no smears, feathers, or bleed-through on most papers. ?Meets ACMI non-toxicity standards Application ? The metallic colors give a pearly shine and the flow is smooth as silk. ? Personalise your greetings, invitations and signatures and let your writing stand out ? Write and decorate light and dark surfaces and work effortlessly on glossy and matte surfaces. ? Use for writing, art and craft , card making and decorating in books, scrapbooks, journals