Can be used in business or craft-related settings. Convey important subject matter data and values or express personality style and feelings and safeguard work with lasting quality. Archival quality ink is chemically stable waterproof and fade resistant on paper. No smears feathers or bleed-through on most papers. Chisel point for wide coverage and bullet point for detail. Odorless quick drying and non-toxic. Set contains 20 markers in a reusable storage case.