Autocalvable Impression Tray can be heated to 121 degree Celsius, can be reused after sterilization, upto 10 times. Uniquely designed trays made with sturdy and durable plastic,have an ergonomic design. Made up of high-quality plastic. Ideally used in recording impressions for dentulous cases. Impression trays have a smooth and curved border for ease in impression taking following the anatomy of maxilla and mandible. Autoclavable Impression trays are autoclavable.