LuxaCore Z-Dual Automix Core Build Up Material - BLUE Shade Refill Kit: 1 - 48gm Cartridge, 35 Automix Tips and 35 Intra-Oral Tips. Ultra-strong, ultra-reliable core build-up material created with zirconia. Its combination of zirconia filler with DMG's patented nanotechnology means it significantly improves strength, flowability and physical properties. LuxaCore Z-Dual also works for your post cementing needs. 48 gram cartridge & tips