Reamers are rotary cutting tools used in metalworking. Reaming is the process of enlarging and sizing a hole by means of a multifluted cutting tool. Precision reamers are designed to enlarge the size of a previously formed hole by a small amount but with a high degree of accuracy to leave smooth sides.

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.

There are several variables that determine a reamer's performance: speeds, feeds, and material of the workpiece.

Non-precision reamers are used for more basic enlargement of holes and light material removal to deburr.

Straight fluted reamers are used for general purposes for a wide variety of materials and applications.

Right hand spiraled reamers have the tendency to pull chips out of the hole; therefore a right hand style of helix should never be used on a tapered reamer or the reamer may wedge, leading to catastrophic tool failure.

Left hand spiral reamers have the tendency to push chips in front of the cut. A left hand spiral can be used on tapered reamers to help prevent grabbing and binding. They should not be used in a blind hole application, because the chips will pack into the bottom of the hole and prevent the reamer from attaining full cut depth.

All items are new in original manufacturer's packaging {unless otherwise noted}.

They are limited to quantities available.

These items are from manufacturer's overstocks, distributors who have changed products lines and manufacturer's who have had print changes and no longer have a particular job in house where items where used.