The gimlet bit is a very old style. The bit is similar fashion as that used in the gimlet, a self-contained Device for uninteresting smaller holes in Wooden by hand. Given that about 1850, gimlets have had a variety of cutter styles, but some are still manufactured with the original https://drill-bit-manufacturer59360.jaiblogs.com/61300476/getting-my-drill-bit-manufacturer-to-work