BECOLLO 1/4 Inch Cobalt Drill Bit Set, M35 Jobber Length Twist Drill Bits,Suitable for Drilling in Hard Metal, Stainless Steel, Cast Iron,10 Pieces

Made from cobalt(5%) High Speed Steel , increases the wear and heat resistance of drill bit, the life span of drill bit is prolonged. Fully Grinding Processing makes the surface of drill bit smoother, the friction can be reduced and the cutting speed is faster. 135° Split Point Design improves cutting speed while easy self-centering, prevent walking and skating across the workpiece surface Perfect suitable for drilling in hard metals such as stainless steel and cast iron, and other softer material are also possible. 10pcs of 1/4 inch cobalt drill bit are packed in a plastic case for easy storage and carrying , manufactured in strict accordance with ANSI B94-11M.