O-Bite Is A Superior New Bite Registration Material That Provides You With Exceptional Accuracy, Predictability And Speed. Specifically Developed To Yield More Stable And Precise Bite Registrations, O-Bite's Proprietary Vinyl Polysiloxane Formulation Offers A Shore A Hardness Of 94 Providing Unrivaled Stability And Resistance To Breakage. COMPOSITION: Vinyl polysiloxanes hydrogen polysiloxanes Fillers Pigments Additives Platinum catalyst