materials: Fiberglass meshes which is embedded into a layer of Basecoat which reinforces the product and adds substantial strength Package include, 10 / 24sheets Flexible Fiberglass meshes that can also be used to prevents cracking in concrete / drywalls and so on Our fiberglass meshes is strong enough for any tiles or tesserae you care to use, including glass, porcelain, ceramic, stone, quartzite or cement Perfect for larger projects, Interior or Exterior use, Easy to use Alkali resistant, retardent