PST® Plastic Instrument Sterilization Tray with Insert features a removable upper-level insert with mat to accommodate a variety of surgical instruments. Unique grid system makes it easy to install mats and insert for delicate instrument protection. Integral feet on base and corner ridges of lid allow for easier handling in autoclaves and storage. See-through lid provides easy identification while offering protection during transport. Included mats retain their flexibility even after repeated sterilization at high temperatures. Tray is molded from GE's ULTEM® resin using mold flow analysis to guarantee product strength, structural integrity, and extended life cycle, and withstands the rigors of standard sterilization methods, including steam autoclave, dry heat, or chemical. Includes base, lid, insert, and two mats to accommodate a variety of instruments.