The TRODAT self-inking daters work and feel as great as they look. Just one impression and you will appreciate the ergonomic shape and heavy duty construction. The Ideal self-inking stamps feature a heavy duty frame and precision components for a smooth, quiet action and many years of trouble free operation. The TRODAT stamps are an excellent choice for business and personal use. * Special locking grooves on the back of the date and number band mechanism provide a sure positioning system for accurate band alignment.