The Halls MC High-Speed Steel Step Drill Bit in the 10mm - 20mm size range is perfectly suited for medium-diameter hole applications in sheet metal work. Covering eleven consecutive sizes—10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20mm—this variant bridges the gap between smaller precision work and larger diameter requirements. Featuring a 10mm shank for secure chuck grip, this step drill is ideal for creating holes for cable glands, conduit fittings, and standard electrical components. The 1mm increments ensure you can achieve the exact hole size needed for proper component fitment, whilst the medium size range makes it a versatile choice for general trade work. Suitable for sheet metal up to 4mm thick, this bit delivers clean, parallel-sided holes without the need for pilot holes or multiple bit changes. Remember to always use a coolant when drilling metals to preserve the cutting edge and ensure optimal performance. Features and Benefits: • Eleven sizes covering 10mm to 20mm range • 10mm shank for secure chuck retention • Maximum material thickness: 4mm sheet metal • 1mm increments for accurate sizing • Ideal for cable glands and electrical fittings Specifications: Min. Size (mm): 10 Max. Size (mm): 20 No. Steps: 11

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