100 Surgical Scalpel Blades Size 11 Sterile Carbon Steel Disposable SealedMedsure Surgical Blades Size 11 come in a box of 100 and are made of extremely sharp carbon steel, sterilised by gamma radiation 2. 5 M Rads. They are to be used with a scalpel handle size No. 3. To ensure sterility, the box of blades features a red spot sticker that stays red when sterile. Specifications: Size No. 11 Medical Grade Disposable for single use only CE 2460 approved Sterility not guaranteed if packet is broken Individually Sealed