General Features of R41 Series No.24 High Speed Steel General Purpose Screw Machine Drill Bit. Bright finish improves chip flow in soft or non-ferrous materials. Pack of 12 Applicable Materials. Alloy steel, brass, bronze, copper, free machining of stainless steel, ferritic austenitic, iron, graphite/malleable cast iron, quenched and tempered steel, magnetic mild steel, nickel, plain carbon steel, structural steel/carburizing steel case and titanium. Specifications: Depth of Cut 2.5XD. Cutting Direction Right Hand. Cutting Edge Material HSS. Drill Diameter Measurement System Imperial. Bright Finish. Flute Length 1 in.. Flute Type Spiral. Size Letter/Wire No.24. Material HSS. Number of Flutes 2. Overall Length 21/16 in. Point Angle 118 Degrees. Point Type Conventional. R41 Series. Shank Size 0.152 in.. Straight Shank Type. General Purpose Type