HSS 4341 Step Drill Bit 4-22mm Spiral Flute

The Sealey AK4747 4mm-22mm Double Spiral Fluted HSS Step Drill Bit is the compact solution for everyday drilling applications, covering the most commonly required hole sizes in workshops and on-site installations. This 4mm to 22mm range in 2mm increments provides versatile drilling capability for standard electrical boxes, cable glands, and general metalworking tasks without the bulk of larger bits. Constructed from high-speed HSS 4341 steel, this step drill features precision-ground double spiral flutes that efficiently evacuate swarf as you drill, preventing material build-up and ensuring clean, burr-free holes. The stepped design allows you to drill multiple hole sizes from a single bit, significantly reducing tool changes and improving workflow efficiency. Whether working with sheet metal, plastic enclosures, or thin steel panels, this bit delivers consistent, professional results. Features and Benefits: • 4mm-22mm range covers most common hole sizes in 2mm increments • Double spir