Cobalt Screw Machine Length Drill Sets

Style 559

Heavy-duty cobalt HSS screw machine length drill with 135° split point and straw finish. Designed for drilling work-hardened or tough high-tensile materials such as high-strength alloy steels, stainless steel, titanium, manganese steel, armor plate and inconel. Resists deflection under high thrust and 8% cobalt, high speed steel maintains cutting effectiveness at high temperatures. Split point eliminates "walking" and allows quick workpiece penetration. Ideal for portable use.