ClassiX Self-Inking Stamp - P13. 1" x 2-1/2" impression area. Self Inking custom stamps are convenient for all office and personal uses. The ergonomic handle is designed for durability and comfort. Stamps make approximately 5,000 - 7,000 impressions before needing to be re-inked. The stamp pad is refillable and replaceable. Use self-inking refill ink only to re-ink your stamp. Use of any other ink can damage the stamp pad, the stamp and void out any warranty.