Prints Charming Number Font Sets are 1.5 cm (0.6 inches) in diameter. The actual number varies in size on each stamp. Each set includes 9 numbers 0, 1, 2, 3, 4, 5, 6, 7, and 8. There is a small notch at the bottom of each number to help make it easier to align the stamp. MKM stamps are beautifully carved, have unique designs, and release well from clay or any soft medium. The stamps are made from wood that is precision carved to make deep beautiful impressions. Each stamp is bevel carved, allowing them to release easily from clay. All MKM stamps are finished with tung oil to ensure durability over many years of use. These stamps are easily cleaned with water and a soft toothbrush.