Armour Over N Over Stencils are self stick and can be reused 15 to 20 times with careful use. Use with Armour Etch Glass Etching Cream, water based paints and even body paints. Use on glass, mirror, ceramics and other non-porous surfaces. Transportation- 6 stencil designs: spaceship, helicopter, train, plane, truck, oval, and 3 complete upper case alphabets with numbers, there are extra names for examples. Largest measures approximately 2.63 in. x 1.25 in.