PERFECTemp II - A3.5 Cartridge, Temporary Crown & Bridge Material 4:1, Self-Cure, Bis-Acrylic. Refill Package: 1 - 50 ml Cartridge and 15 Mixing Tips. 6 min set time; 2.5 min removal time. Easy trimming and polishing for a natural luster. 4:1 ratio base to catalyst. 50 ml cartridge and tips