The gimlet little bit is a really outdated design. The bit is similar design as that used in the gimlet, a self-contained tool for unexciting little holes in wood by hand. Since about 1850, gimlets have experienced several different cutter layouts, but some remain developed with the initial version. The https://edwinnjfcw.ttblogs.com/13971069/the-5-second-trick-for-drill-bit-manufacturer