The gimlet bit is a really aged style and design. The little bit is similar design as that used in the gimlet, a self-contained tool for boring compact holes in Wooden by hand. Because about 1850, gimlets have experienced various cutter models, but some remain made with the initial Edition. https://juliussnhyq.sharebyblog.com/34127793/not-known-facts-about-drill-bit-manufacturer