Work on hand and finger strengthening as you reinforce letter and number recognition. Set includes all the letters of the alphabet and numbers 0-9. Push the 4 long plastic stampers into clay, dough or putty to see a dotted outline of the character appear. Kids are fascinated by the impressions left behind and so are motivated to try writing simple words, their addresses, phone numbers, etc. A great addition to your collection of clay/dough tools.