XStamper self-inking stamps are designed using laser engraving technology. Because of their durability, they can make as many as 50,000 impressions. Only use the XStamper ink or you could end up voiding your warranty. If you need to add additional ink, you simply remove the handle and put a few drops of ink in. Allow the stamper to sit overnight to saturate it completely. This pre-inked XStamper N27 large message stamp measures 1 9/16-inches by 3 15/16-inches. It works wonderfully for both office and personal uses, so make sure to pick yours up today.