Sentry Instrument Tray; 8.25" X 8.25" X 1.25" Protect Your Delicate Instruments With The Cost Effective Sentry Instrument Tray. The Sentry Instrument Tray Is A Light-Weight, Inexpensive Tray To Autoclave All Of Your Instruments. The Tray Has A Seperate Top And Bottom That Lock Together. The Tray Is Also Lined With Silicone Extrusions To Secure Your Instruments. Stackable Trays Make It Easy To Use Multiple Trays At Once With An Autoclave. Made Of Ultem 2000 Plastic.