Self-inking stamp has a maximum text plate size of 3/4" x 1-7/8" - (18 x 47 mm) allowing you to create up to 4 lines of customized text. No more writing out your address. This small, versatile stamp is the perfect size to create your custom return address stamp for use on letters and envelopes. The text stamp contains post-consumer plastic and is a climate neutral product, so you can feel good about helping the environment. The crystal clear viewing window ensures ultra-precise positioning of the impression.