Tray always disposable impression trays are the original plastic tray! updated throughout the years, used not only in dental but also implant. Earned its place in your office. Tray always are the disposable impression trays of choice suited for use with alginate or other types of impression materials where detailed reproduction and dimensionally-stable results are vital. Made from rigid, high-impact styrene, tray always assist in generating a consistent, unsurpassed impression free of distortion or Bite through. Smooth, rounded edges, interior retention slots, and vertical perforation enhance material retention. The best value on the market.