Non -Dry Sketch Pen Ink is used with plastic as well as metal components. Smoothline Industries is the manufacturer of Non -Dry Sketch Pen Ink. Smoothline Industries also manufactures various types of ballpoint pen inks, permanent marking inks, laundry marking inks, X- ray marking inks, UV visible marking inks, printer ribbon ink, ink -jet inks, bindi pen inks, white board marker ink, gel pen inks etc. Non -Dry Sketch Pen Ink is generally available in 13 standard colors. Non -Dry Sketch Pen Ink is made using high grade FDA standard colors to ensure that the children using them would not face the danger of toxicity, incase of an accidental release or consuming the inks by mouth and like. This Sketch Pen Ink is water based in nature.