Ensure efficient communication and provide clear labeling with the use of this "PAST DUE" office stamp. This ExcelMark A-1539 stamp features a 9/16" by 1-1/2" rectangle impression area. A durable, yet lightweight, plastic construction provides long-lasting use. A self-inking mount re-inks the die before each impression, making it ideal for quick, repetitive stamping. In addition, a unique, reversible (two-sided) ink pad doubles the life of the pad. Simply push it out, flip it over, reinsert and keep stamping! Each side of your ExcelMark ink pad initially lasts for thousands of impressions and is simple to re-ink and replace. Choose from black, red, blue, green, purple or brown ink. A clear base on the mount allows you to always easily line up impressions. Stay organized with this ExcelMark Past Due Stamp today!