Set of 15 self-inking rubber message push stamps from the brand Lucky Stamps. These stamps are themed around school and education, making them perfect for teachers to use in assigning homework or leaving messages for students. Made from durable rubber, these stamps are ideal foe stamping Homework in a fun way Each stamp is self-inking, ensuring easy and convenient use without the need for messy ink pads. The ink pads are easy to refill with ink as needed (sold separately). I stamped each one on a paper to show how they work. There is a locking mechanism on the back of the stamp to prevent them from stamping when not in use. These are $25 each brand new so this is a great deal for any grade school teacher and will last for years!!