If you want to buy top quality, please try our product. YOU WILL BE SATISFIED WITH IT!Autoclavable up to 135℃.Use stainless steel to avoid breakage, allowing long term use it.Sterilization pouch included. In sterilization, put mirror into cotton cloth pouch instead of disposable sterilization pack. Hardness comparision (Vickers Hardness): Hard Stainless Steel------approx.369HV. Normal Stainless Steel------approx.240HV. Our mirrors are made of hard stainless steel, have more hardness than normal stainless steel. This feature makes our mirrors can’t be scratched and distorted easily. However, it can be damaged under improper use. Direct Reflection / About 85%. Bended design for keep fingers out of your clinical photographs. G6~G12 are made of malleable steel covered by black silicone. Soft silicone can make patient more comfortable and no steel cold. Can be bent for easier position.SDent 1 PC/Bag Dental Photograhic Mirror Stainless Steel Lingual 50mm*140mm*30mm