How many blades of a scalpel?

A scalpel typically has a single blade designed for precise cutting in surgical procedures. However, there are various types of scalpels, and the blades can be replaced or interchanged depending on the specific needs of the surgery. The most common scalpel used in medical settings is the #10, #11, #15, and #20 blades, each serving different purposes. Therefore, while a scalpel is generally one tool, it can accommodate multiple blade types for different applications.