The gimlet little bit is an extremely outdated design. The bit is the same fashion as that used in the gimlet, a self-contained tool for uninteresting tiny holes in Wooden by hand. Considering that about 1850, gimlets have had various cutter types, but some remain manufactured with the initial Model. https://beaushviw.bcbloggers.com/33451369/the-definitive-guide-to-drill-bit