General Features of 5ATL Series High Speed Steel General Purpose Taper Length Drill Bit. HSS high speed steel provides good wear resistance. Bright provides a smooth, polished finish on the tool. Increases chip flow in softer materials such as aluminum, wood, and plastic. Spiral flutes are constructed with a higher flute angle for easier chip removal. Tapered band configuration. No coolant channel. Pack of 6 Applicable Materials: Magnetic soft steel, structural steel, carburizing steel, plain carbon steel, nodular graphite, malleable cast iron, reinforced plastics, and copperSpecifications. Depth of Cut 6XD. Cutting Direction Right Hand. Cutting Edge Material HSS. Diameter 0.2677 in.. Finish Bright. Flute Length 4.016 in. Flute Type Spiral. Material HSS. Number of Flutes 2. Overall Length: 6.142 in. Point Angle 118 Degrees. Conventional Point Type. 5ATL Series. Shank Size 0.2677 in.. Straight Shank Type. Type N General Purpose