Soft Glass Frit sold in single color jars or by the ounce where indicated. These are frits that furnace glass workers use and they pack a lot of punch! You can use anywhere from 5% of a soft glass bead with them! Try them with silver leaf and on reactive glass. They are fully compatible with Uroboros COE 96 glass and Oceanside Glass. Many are Reichenbech formulas from before 2010.