IRWIN® HSS Pro Titanium Drill Bits are designed for drilling metal and harder alloys, as well as being able to produce increased drill speeds of 40%-60% in comparison to the standard bits. With a titanium nitride coating, the drill bits offer higher friction resistance and longer life. Their 135° split point ensures perfect centring and minimises bit walk, whilst also reducing drilling pressure, giving a more accurate and clean finish. Heavy-duty web construction is designed to optimise strength and durability of the drill bits. Supplied in a handy storage case.