The gimlet little bit is an extremely aged style. The bit is the same type as that used in the gimlet, a self-contained Instrument for dull compact holes in wood by hand. Since about 1850, gimlets have had various cutter models, but some are still produced with the initial version. https://drillbitsupplier59370.bloginder.com/34967628/the-best-side-of-drill-bit-manufacturer