The gimlet little bit is an extremely aged structure. The little bit is identical design as that Utilized in the gimlet, a self-contained Software for dull small holes in Wooden by hand. Since about 1850, gimlets have experienced many different cutter models, but some remain manufactured with the first version. https://drill-bit49505.tribunablog.com/the-5-second-trick-for-drill-bit-manufacturer-48655737