Also known as: メス, 円刃刀, えんじんとう
A small and extremely sharp Knife used for surgery, anatomical dissection, and various arts and crafts (called a hobby knife). Double-edged scalpels are referred to as "lancets".
This tag is specifically for the medical tool. If the image is showing the the blade being used in an arts-and-crafts context, use Hobby Knife instead.