With archival quality ink that is chemically stable, waterproof, and fade resistant you will be able to create stunning messages without worry of smudging or feathering when used on most surfaces. Offering both a chisel point for wider coverage and a bullet point for finer details these odorless and quick drying pens are a perfect non-toxic solution. They are shake and pump free so you can just start writing. They are great for multiple uses such as on: canvas, plastic, metal, glass (not permanent), wood crafts, ceramics (decorative only, not intended for food service or ceramics that are washed), and pottery. The ink is easily removed with a dry eraser when used on our LED Message Board Signs ( 7.5 inches X 10.5 inches or 18 inches X 25 inches). This set includes blue, green, red, white and yellow pens.