The Faithfull HSS Step Drill 4mm - 12mm is the compact option in the range, perfect for smaller diameter holes in thin metal work. This versatile bit covers sizes from 4mm to 12mm in 2mm increments, making it ideal for electrical installations, light metal fabrication, and general workshop tasks where smaller fixings and cable glands are required. Designed for use in materials up to 4mm thick, this step drill eliminates the need to carry multiple drill bits when working on-site or in the worksho
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