Guided by the circular rim, bores any arc of a circle. Radial cutting edges, titanium-coated for extended life. Bores a true, flat-bottomed hole. Rapid removal of waste. Sizes 12, 16, 20, 22, 26, 30, 35mm. Guided by the circular rim, bores any arc of a circle. Radial cutting edges, titanium-coated for extended life. Bores a true, flat-bottomed hole. Rapid removal of waste. Sizes 12, 16, 20, 22, 26, 30, 35mm.