Feature: 1. Secure sealing to prevent penetration and tearing from incisive instruments. 2. Made of strong medical grade sterilization paper, sanitary and sturdy for dental tool use. 3. It can be used for packaging reciprocating dental equipment for pressure steam sterilization. 4. The back of each sterilization bag has high temperature and high pressure and ethylene oxide sterilization indicators, which will change color during sterilization. 5. Widely application for dental equipment, dental materials, cosmetic packaging, hospital, laboratory supplies disinfection packaging. Specification: Condition: 100% Brand New Item Type: Self Sealing Sterilization Pouch Material: Plastic Size: Approx. 57 x 130mm / 2.2 x 5.1in Quantity: 200pcs/box Instruction: After pressure steam sterilization, the indicator changed from blue to black; after ethylene oxide sterilization, the indicator changed from red to yellow . Package List: 200 x Self Sealing Sterilization Pouch Note: 1. This product is suitable for steam pressure sterilization or ethylene oxide sterilization, but it is not suitable for the packaging of dry heat sterilization products over 140 ℃.2. This product should be stored under the conditions of 20 ℃ -25 ℃ and relative humidity less than 50%.3. This product has a shelf life of 2 years under normal temperature and humidity, and a shelf life of 180 days after sterilization.