The Irwin 13 Piece HSS Titanium Drill Bit Set is a professional-grade drilling solution designed for metalworking applications and drilling harder alloys. This comprehensive set features titanium nitride coated HSS drill bits that deliver superior performance and extended service life compared to standard drill bits. The titanium nitride coating provides higher friction resistance, enabling drill speeds 40-60% faster than conventional bits whilst significantly increasing tool longevity. Each drill bit features a precision 135° split point that ensures perfect centring and minimises bit walk, reducing the drilling pressure required and delivering cleaner, more accurate holes in metal and harder materials. Heavy-duty web construction throughout the set optimises strength and durability, making these drill bits suitable for demanding professional applications. The set covers a comprehensive range of commonly used sizes from 1.5mm to 7mm, providing versatility for various metalworking tasks. All drill bits are supplied in a convenient storage case for organised transportation and protection between jobs. Features and Benefits: • Titanium nitride coating for increased wear resistance and longer tool life • 135° split point minimises bit walk and ensures accurate hole positioning • Heavy-duty web construction for enhanced strength and durability • 40-60% faster drilling speeds compared to standard HSS bits • Storage case included for organised tool management Specifications: Type: HSS No. Pieces: 13 Sizes: 1.5, 2, 2.5, 3, 3.2, 3.5, 4, 4.5, 5, 5.5, 6, 6.5 and 7mm.