Fastray Custom Tray Acrylic Base from Bosworth is dimensionally stable, radiopaque self-curing individual tray and acrylic base plate material in regular set. Fastray custom tray material resin for crown is orderless and its easy to trim with dental burs. Acrylic base for custom impressions or for crown and bridge. There is also a kt with more choices for different shades of denture repair. Standard pack, complete kit - BLUE. (1 lb. (454g) Powder 8 oz. (236ml) Liquid)