From the manudacturer:
Duro-Stencil It! These high quality oil-board stencils are great for posters, scrapbook layouts, signs, windows and much more. Use then with paint, ink, chalk by using brushes, markers, pencils, sprays and just about any other application process. These stencils are lightweight, and extremely versatile. Stencils can be used over and over again. Each package contains uppercase A-Z (with extra A, E, O, R and S), numbers 0-9 and symbols. Made in USA.