Orthopedic bone tap. It is excellent in quality. Very easy to use. Made of stainless material.
The sizes offered are listed below.
The length for 3.5mm and 4.0mm is about 6 inches long.
The length for 2.0 and 2.7mm is a little over 5 inches long.
The length for 1.5mm is a little over 2 inches long.