Irwin High Speed Steel Step Drill

The Irwin Step Drill Bit with 4mm - 22mm capacity provides 10 hole sizes, making it ideal for a wide variety of everyday sheet metal drilling tasks. This versatile bit spans from small 4mm holes right up to 22mm, covering the most commonly required hole diameters in general fabrication and electrical installation work. Designed for precise drilling in thin materials, this bit features a single flute for maximum drilling control into sheet metal. The unique flute design ensures perfect round holes every time, whilst the fluted shank prevents slipping in the chuck during operation. The self-centring point eliminates the need for centre punching and prevents the bit from walking across the material surface. Features and Benefits: • 10 hole sizes: 4, 6, 8, 10, 12, 14, 16, 18, 20 and 22mm • Industrial grade M7 high-speed steel construction • Single flute design for maximum control • Fluted shank prevents drill bit slipping • Self-centring point for accurate positioning Specifications: Min. Size (mm): 4 Max. Size (mm): 22 No.