Stamps Assemble! Our Avengers Stampers feature different colors and symbols, representing individual Avengers, as well as the Avengers superhero group and S.H.I.E.L.D. Stampers are super party favors and giveaways, decorating invitations and thank you notes, or everyday general use. Each reusable self stamper comes with its own plastic cap. Package includes 6 Avengers Stampers, each measuring 1in diameter.