GI Mask Automix New Formula - Silicone-Based Soft Tissue Material, Refill Kit: 2 - 50 ml Cartridges, 12 Mixing Tips, 12 Oral Tips. Quick and accurate. fast and direct application of the model analog. suitable for single crowns, bridges, implants, combination and telescopic work.. the production of a Lab Putty key (e.g. Coltène Lab-Putty) is no longer necessary.. GI-MASK Automix New Formula facilitates the preparation of esthetically excellent and perfectly functioning crown and bridge work. In addition it helps to prepare ideal conditions for periodontal hygiene.