The Secure-I-D Personal Security Roller Stamp helps you black-out sensitive information on mail, documents and receipts. Security impression is 1-1/2" high, and you can adjust the length as needed by how long you roll. Roller design allows users to easily conceal sensitive documents. Stamp is pre-inked with black ink and lasts for thousands impressions.The Secure-I-D Personal Security Roller Stamp helps you black-out sensitive information on mail, documents and receipts. Security impression is 1-1/2" high, and you can adjust the length as needed by how long you roll. Roller design allows users to easily conceal sensitive documents. Stamp is pre-inked with black ink and lasts for thousands impressions.