Glass Art Supplies Bullseye Kiln Fusing Glass Frit 403 Opaline Striker Opal Crafts,Opaline Striker Opal Bullseye Kiln Fusing Glass Frit 403, screened and magnetically cleaned Bullseye compatible sheet glass, The colour of the frit in its unfired and fired states may differ greatly,Frit - Opaline Striker Opal, Bullseye frit is made from crushed.Frit 403 Opaline Striker Opal Bullseye Kiln Fusing Glass.