Ultimark Refill Ink For All Pre-inked Stamps 5 Colors Option Size: 1/2 ounce Bottle Model: Ultimark Use this Ultimark Refill Ink to re-ink your Ultimark Pre-inked Message Stamp giving you up to a thousand more crisp and sharp stamp impressions before re-inking is necessary. The Ultimark Refill Ink can also be used for re-inking other "pre-inked" stamp brands but NOT to be used for self-inking stamps that have a flipping stamp die plate and a removable ink pad. For those type of stamps we recommend the Shiny Refill Ink (a water-based ink) available from our eBay Store. This Ultimark Refill Ink is for use on paper, kraft paper, cardboard and other pourous sufaces where drying can occur by absorption. Ink drying MAY NOT occur when stamping on surfaces like poly, vinyl, plastic, glass, metal, photographs and other non-pourous surfaces. Our suggestion is to stamp on a self-sticking label which is then adhered to you item. HOW TO RE-INK THE ULTIMARK PRE-INKED MESSAGE STAMP: 1) Pull apart the Blue Cover section . 2) Squeeze 6 drops of ink (no more) into each side of the two black inking towers. 3) Re-attach the upper and lower sections of the stamp (will snap together). 4) Allow 2 to 3 hours for ink to absorb and become effective in the stamp. If the stamp still does not make full stamp impressions after 12 hours, repeat the process.