Swann Morton 9210 No 3 metal scalpel knife. Fits blade no's 10, 10A & 11. The professional range of blades and handles are produced with craft professionals and enthusiasts in mind. Pointed pliers should be used when attaching and removing a blade. Each knife comes with 5 x No 10A blades. Box of 10 knifes. Not to be sold to anyone under the age of 18.