Hexagonal twist drill with depth stop Hexagonal twist drill with stop pocket hole drill Description. Flute and positive stab bits are a variant of the twist drill, optimised for wood drilling. Conventional twist drills tend to drift when placed on flat workpieces. In wood, the lip and right-angle drill is the solution: instead of a straight chisel with a rotating bit, the centre of the bit is a right angle with a pointed tip and a sharp corner for cutting wood. The pointed tip is simply pushed into the softwood to keep the bit aligned. Features. The bit is made from high speed steel for good hardness and durability for woodworking. Can be fitted to many electric chucks. The pointed tip is designed to prevent slippage and simply pushes into the cork to keep the bit aligned. The set comes with an adjustable round bit stop for setting the drilling depth. There is a small L-shaped hexagonal spanner so you can easily use it to adjust the drill stop. Specifications. Length: 158mm Cutting edge length: 65mm Length of cutter tip: 12mm. Hexagonal shank length: 25mm Diameter: 6.35 mm (1/4) Block O.D.: 19 mm (0.75) Block ID: 9.5 mm (3/8) Colour:Black,Silver Package includes. 1 drill bit 1 drill stop 1 hexagonal spanner