Hones and honing tools are abrasive products used to refine the finish of internal bores and external surfaces. There are three basic types: flexible hones, hand hones, and honing sticks or tools.

Description: -1.5 micrometer Ra (3-60 micro inches Ra) in aluminum, welded, drawn or hardened steel, brass, ceramic, carbide, etc. Sunnen Portable hones can correct undersize, taper, out-of-round, ...

You can use power tools like a Dremel or an angle grinder with a metal sharpener attached, or you can hone it by hand with a whetstone. A unibit is a pyramid-shaped bit that has different diameters.