Adjustable Hand Reamer 27.5mm-31.5mm
A reamer is a type of rotary cutting tool used in metalworking. Precision reamers are designed to enlarge the size of a previously formed hole with a small amount but with a high degree of accuracy to leave smooth sides. There are also non-precision reamers that are used for more basic enlargement of holes or for removing burrs. The process of enlarging the hole is called reaming. There are many different types of reamers and they may be designed for use as a hand tool or in a machine tool, such as a milling machine or drill press.