With over 20 years of proven reliability, express impression material offers a hand-mix putty and convenient delivery with the easy-to-use cartridge dispenser. Includes: 1 - jar base; 1 - jar catalyst, 305Ml each. 3M ESPE 7312 Express Standard Putty, Orange, Pack of 2. The first vinyl polysiloxane auto mix system used worldwide. Multiple pour capability. Precise detail reproduction. Good dimensional stability. Excellent elastic recovery.