Tuff-Temp Plus is formulated with a patented rubberized-resin component that resists fracture and chipping. It is dimensionally stable for tighter fitting temporaries to provide better retention. The material grinds and powders to crisp margins without softening, melting, or gumming up rotary instruments. Tuff-Temp Plus is a proprietary urethane resin that contains no Bis-GMA, no Bisphenol A, and no BPA derivatives. Includes: (1) 5ml Syringe (10) Automix Tips (1) 3ml Glaze