Armour-Over-N-Over Reusable Glass Etching Stencils. These stencils are flexible, multi-use stencils that easily adhere to glass, mirrors, ceramics, metal and other non-porous surfaces so you can easily decorate and personalize your project with sand, glass etching creams or painting. This package contains one 5x8in stencil. Available in a variety of designs: each sold separately. Made in USA.