$ 74.99


Our item #0001 is a #1 Jacobs taper reamer made out of M2 high speed steel. This reamer is used to clean up #1 Jacobs tapers found on Jacobs drill chucks and other brand drill chucks. It is also used for custom precision jigs and fixtures that incorporate the use of a #1 Jacobs taper hole or mount. This reamer is not only designed to clean the taper on existing holes but also, to create a #1 Jacobs tapered hole out of an existing drilled hole.



Cutting Taper: #1 Jacobs

Shank Diameter: 3/8” 

Flute Design: Straight

Flute Count: 6

Material: M2 High Speed Steel

Hardness: 64 Rockwell



This reamer will do production runs and cut material quickly. The use of a full pecking cycle and oil-based coolant is strongly recommended for maximum performance and finish. This reamer can be used by hand with a tap wrench or socket. It can also be used in a drill press or vertical mill with a 3/8” or larger drill chuck or 3/8” collet. Keep in mind, this reamer is not a drill. Run this reamer at half the speed (RPM) and twice the feed that you would a drill.


More Information

This M2 high speed #1 Jacobs taper reamer is brand new and manufactured with pride in the U.S.A. by XKUT. We are the manufacturer of this reamer.

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