Applications Primarily designed for machining operations in screw machines. Short length offers increased rigidity for machine Drilling a variety of materials including steel, cast steel, cast iron, alloyed or non-alloyed ferrous materials, as well as non-ferrous and non-metallic materials. Use with hand held manual Drills, portable or stationary machines. For optimal performance, use of lubricating/cutting oils or coolant fluids is recommended. TTC PROD 1/6-1/2 By64ths 29 Piece HSS Fractional Screw Machine Stub Length Drill Set PRODUCT SPECIFICATIONS Brand TTC Production Size 1/6" to 1/2" by64th Drill Point Angle 135° Finish Coating Black Oxide Point Sharpening Type Split Point Cutting Direction Right Hand Drill Type Stub Length Flute Shape Helicoid Grade Production Hardness 58 to60 RC Case Type_Material Metal Model # 61 No. of Sizes 29 Quantity Break 0 Shank Style Straight Shank Size Range 1/6" TO 1/2" BY64THS Tool Material High Speed Steel Type Screw Machine Stub Length Twist Drill Sets Weight 263 lbs. Country of Origin Import