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. The first vinyl polysiloxane automix system used worldwide. Multiple pour capability. Precise detail reproduction. Good dimensional stability. Suggested Application: Crown and bridge impressions. Inlay and onlay impressions. Denture and partial denture impressions. Working time (including mixing): 1:00 min. Setting time (from start of mix): 5:00 min. Includes: (1) 305ml Base (1) 305ml Catalyst