GC Fuji IX GP Extra - A3 Capsules 48/Pk. Packable Resin Reinforced Glass Ionomer. GC Fuji IX GP EXTRA's new SmartGlass filler takes glass ionomer to a whole new level: EXTRA fast setting - Finishing in only 2 1/2 minutes; EXTRA high fluoride release - Six times higher than the current GC Fuji IX GP FAST; EXTRA translucency - Allows improved aesthetics and shade matching; EXTRA strong - Maximizes durability for optimum performance. 48 capsules