The size of a drill is usually stamped on its ______.

The size of a drill is typically stamped on its shank, which is the part of the drill that fits into the drill chuck. This stamping provides crucial information about the drill bit, allowing users to easily identify the diameter and size without needing to measure it manually. The shank is designed to securely hold the drill bit in place during operation and is made to fit into various drill chucks, making the size marking convenient for quick reference. Therefore, knowing the size is important for selecting the right drill bit for the specific application, ensuring both efficiency and precision in manufacturing and production processes.