Ingco HSS Drill Bits 10mm, 5-Piece Set (DBT1101003)

Our review

This is a five-piece pack of 10mm high-speed steel drill bits from Ingco, sold under model number DBT1101003. Every bit in the bag is the same 10mm diameter, so this is a set for someone who drills that size often, or who wants spares on hand rather than a mixed range of diameters. Each bit measures 133mm overall, with 87mm of usable length, which is worth noting if you are drilling through thicker material or into recessed spots where a short bit will not reach. High-speed steel is the common choice for general metalwork and timber, though the exact grade is not stated here. Before buying, check your drill chuck accepts a 10mm shank and that 10mm matches the fixing or hole you need, since a five-pack of one size is wasteful if you only occasionally work at that diameter. Compare against mixed-diameter sets if variety matters more to you, and against cobalt or titanium-coated bits if you regularly drill harder steels. The bits arrive packed in a poly bag, so plan your own storage. Available on Sokonia.