These Valentines Day themed glass etching stencils are reusable up to 20 times with self self adhesive. These are great for customizing any type of glass for your loved one! Or use them to paint unique designs on all types of items. These can be used with paint, glass etching cream, sandblasting with finer grit such as 180-220. This stencil kit comes with a free ebook on CD about how to etch glass and free patterns from the number one educational brand, Glass Etching Secrets.