Stark USA 115-Pieces High Speed Steel Twist Jobber Length Hardened Metal w/Case

Each of these 115 drill bits comes organized in a metal indexed storage case for easy transport to your worksite. These drill bits retain their hardness up to 1000 degrees Fahrenheit making them ideal for drilling cast iron, heat-treated steel, stainless steel, and other hard materials. With aggressive 135 degree tips, these drill bits not only last longer but also cut faster than your standard high-speed steel bits.,Each of these 115 drill bits comes organized in a metal indexed storage case for easy transport to