The Starrett HSS Split Point Drill Bits have superior body strength thanks to a specialised heat treatment, they can withstand the most demanding of applications. The high-performance ecision ground carbide tips deliver consistent performance. Whilst the flute geometry provides fast material penetration and maximum debris removal.They also feature a unique chip removal/breakage accelerator. Designed to meet the requirements of professional users. Manufactured to DIN 338 Standards. This 13 Piece Starrett HSS Split Point Drill Bit Set comes in a handy carry case. The set contains 1 of each size: 1.5, 2.0, 2.5, 3.0, 3.2, 3.5, 4.0, 4.5, 4.8, 5.0, 5.5, 6.0 & 6.5mm.