A Self-Inking stamp works by pressing down on the top of the mount, which flips the die holder to the paper surface. This transfers ink from the die to the paper. Release the downward pressure and the die returns to position against the ink pad.The 4910 is a small self inker that holds a 3/8″ x 1 1/32″ rubber die. It works well for a small address stamp in a purse or case. Also for Rubber Stamps with a limited amount of text.