Try a Little -- Top Quality Glass Frit in Small, Convenient Bottles Bullseye frits are made from crushed, screened and magnetically cleaned Bullseye Fusible sheet glass. Use glass frit for your pate de verre and glass casting projects, or add pizazz to your fusing and kiln-formed glass jewelry. Packaged in a wide-mouth 5 ounce bottle. It provides you with plenty of frit to last for a number of projects, but not so much that you waste space in your studio. They are convenient if you ever need to take your fusing supplies with you on the road. Fully compatible 90 COE. This product is slightly less opaque than Bulleye's Opaque White Frit (#B001382). The image below shows an example of the product's packaging. The next image shows examples how Bullseye medium frit looks before and after firing.