Full range of diameters from 1.0 to 13.0mm in 0.5mm increments for flexibility to cover a broad range of applications · · · Roll-Forged flutes rapidly remove spoil for progressive drilling actions · · Ideal performance in steel and cast materials to 580 H/mm² · · Steam tempered to improve durability · · Optimal 118° grinding processes ensure drill balance, reliable performance and hole tolerance · · The tip angle ensures the jobber bits are versatile for a variety of applications and materials · · HSS Jobbers can be used in steel, non-ferrous, wood and plastics · · A great general purpose metal cutting drill bit · · Ideal for fixing holes, tapping and clearance