Glass Etching Stecil (8" x 11" per sheet).
These are exposed with your artwork to UV light and then developed and 'fixed' to the glass before applying the glass etching creme. Each Stencil is also reusable making them great value for money.
These glass etching stencils must only be opened in subdued light and kept and sealed in the black pvc bag they were supplied in to prevent unwanted exposure to room light.
You only need to cut a small stencil to expose, so a complete sheet should give you many more stencils.