Personalized self inking stamper is the easy way to put your return address onto envelopes, mail-in coupons, sweepstakes entries, warranty cards, forms. Stamps more than 6,000 times! Small stamper makes 3/4" x 2" impression. Large stamper makes 1" x 2 1/2" impression. Each has 4 lines, 26 letters/spaces per line. Specify name and address. Plastic unit.