IRWIN Cobalt Alloy Steel Drill Bit is ideal for drilling into hardened steel, alloys, titanium and stainless steel • Constructed of M-35 5 percent cobalt alloy high speed steel for super abrasive resistance in tough metals • Heavy-duty web construction for strength and durability • 5% cobalt alloy for higher heat and abrasion resistance • Best heat resistance for drilling in extremely hard and abrasive materials including stainless steel, titanium and cast iron • 135 degree split point begins drilling immediately, minimizing bit walk •
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