Address Stamp Custom - Self Inking Return Address Stamp - Blue Ink Address Stamp Custom - Self Inking Return Address Stamp - Blue Ink Customization Instructions: Click on 'Customize Now' on the right and follow instructions. Approximate size of impression is 2.5" x 1" Stamp is self inking and comes with the ink pad already inside the machine. Ink lasts for thousands of impressions. Manufactured in Jacksonville, FL by Holmes Stamp & Sign