HSS Spiral Fluted Step Drill Bit

This compact 9-step variant delivers high accuracy drilling with steps ranging from 4mm through to 12mm in 1mm increments, making it ideal for precision work in electrical installations, junction box preparation, and small aperture requirements. The 65mm overall length provides excellent control and manoeuvrability in confined spaces, whilst the lightweight 25g construction reduces user fatigue during extended use. Perfectly suited for drilling thin sheet materials up to 3mm thickness, this step drill creates clean, burr-free holes without the need for deburring tools. The progressive step design allows you to drill multiple sizes without changing bits, significantly improving workflow efficiency on site or in the workshop. Features and Benefits: • HSS steel construction for extended tool life • Spiral fluted design ensures smooth cutting and efficient chip removal • Cylindrical shank with 3 flats prevents slippage in chuck • Laser-marked diameters in groove for easy size identification • Compact length ideal for tight access areas Specifications: Steps [mm]: 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 Overall Length: 65mm Weight: 25g