The gimlet little bit is a really outdated layout. The bit is the same fashion as that used in the gimlet, a self-contained Software for tedious modest holes in wood by hand. Since about 1850, gimlets have experienced various cutter patterns, but some are still manufactured with the initial Edition. https://drill-bit-manufacturer60493.thekatyblog.com/33012458/the-best-side-of-drill-bit-manufacturer