Helps prevent identity theft by permanently blocking out addresses, account numbers etc 1/2 inches wide encrypted pattern in combination with oil based ink penetrates non-glossy papers so personal information cannot be seen at the front or back. Uses Guard Your ID Refill (IS-004CM) Each roller will cover 3 lines of text and last 1,000 impressions Removable cover makes it easy to store no mess Not for use on glossy or coated papers as oil based ink may rub off With identity theft protection stamps from Guard Your ID handy, it’s quick and easy to ensure your private information stays safe. This Guard Your ID roller delivers an encrypted pattern in oil-based ink that penetrates paper, leaving text like your name and address unreadable on both sides of non-glossy paper. Use it on documents like bank statements, bills, postcards and mail.