4:1 PROVISA®+ Plus C&B is an Automix, bis-acryl, provisional material in a 4:1 cartridge delivery system for creating temporary crowns, bridges, inlays/onlays. Fast setting time of 40-70 seconds. Natural esthetics and fluorescence to look great in any light. Strong, abrasion-resistant formula with high flexural strength for longer bridge spans. Easy application and low polymerization shrinkage for a precise fit. Accessory Information: Mix Tips: 3202-437 Dispensing Gun: 3179-651 Kit: one 50 ml automix 4:1 cartridge and 15 mix tips (dispensing gun not included)