Drilling by hand yields greater accuracy.
Holes drilled by hand are smoother.
A useful instrument for enlarging and opening holes is the tapered reamer.

A tapered reamer can be fitted into an electric drill or operated manually.
In sheet metal, plastic, and other materials, tapered reamers can help align holes, remove burrs from cut pipe, tubing, and conduit, and enlarge and countersink holes.

Specification:
Style : Round handle, hexagon
Size : 3-13mm, 5-16mm
Type: Chucking Reamer
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