Aquasil - Soft Putty Regular Set, Standard Pack. Includes: 450 mL/670 Gm. each of Base and Catalyst, 2 Putty Scoops. Very high viscosity impression material with optimum flexibility for easy removal from undercuts. It is for use as a tray material for the double mix technique or as primary impression material for two-step putty/wash technique. *Compare to Aquasil EasyMix Putty 678120