Single-line stamp is perfect for that small stamping job on a business form or application. The laser-engraved rubber makes this stamp strong and durable for many years of use. It makes approximately 50,000 impressions before re-inking is needed. Impression size is 3/16" x 1-7/16". Use Xstamper Refill Ink only for the pre-inked stamp. Use of any other ink will void out the warranty. Re-inking is easy. Simply slide the handle (from the middle) up and place one to two drops of ink between the openings of the stamp.