These Stamp Pads are used for various non- absorbant surfaces including metal, foil, electronic parts, mylar, coated paper etc. This is the first stamp pad that can be pre-inked with fast drying ink and stays moist for months. When not in use, the construction of the pad prevents the evaporation of the ink. In use, one side always remains closed. When the side in use begins to dry out, the pad is simply reversed and the second side is ready for use. While the second side is being used, the first side rejuvenates itself and is ready when needed. The inking surface is 2.5" x 4" and the pad is available dry or pre-inked. Kit includes 1 pre-inked stamp pad, 1 two oz. bottle of Mark II ink for re-inking, and 1 two oz. bottle of Mark II Reactivator. Kits are available in Black, Blue, Brown, Orange, Purple, Red, Silver, White or Yellow.