Unlimited Refills: To long-term use, our information confidential stamp comes with 3 bottles of ink. If the stamp ink runs out, simply add 5-10 of ink to the hole of the stamp, wait 3 minutes, and then scroll again. Easy to Use: Instead of complex shredders and frequent pen modifications, the roller seal simply rolls over secret information and also carrying a handy box opener for opening delivery boxes, bags, envelopes and packages. Full Privacy Protection: The self-inking roller stamp is easy to use and provides a quick and convenient solution for safeguarding your identity. Simply roll it over important documents, envelopes, or any other surfaces you want to protect. High Security: With its waterproof and fade-resistant ink, this roller stamp ensures long-lasting protection. You can trust that your confidential information will remain hidden, even if exposed to water or sunlight. How to Open the Lid: Gently open the lid from the top of the stamp outward. We've pre-loaded the ink so you can start using the privacy stamp right . If you have any questions, please do not hesitate to contact us for help. color: blue material: plastic Package Contents: 1 x stamps for mailing 3 x ink(random, Not accepting designation) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.