Custom Dater Stamp - Medium (5440) Customization Instructions: Click on 'Customize Now' on the right and follow instructions. This customizable medium dater stamp is perfect for the home or office. The Trodat 5440 is extremely sturdy and designed to work for over 10 years with continuous use. This medium dater stamp dimensions are 1.125" tall and 2" wide. Pick the ink color after clicking on 'Customize Now' on the right.