Ingco HSS Drill Bits 5.0mm, 10-Piece Set (DBT1100503)

Our review

This is a ten-piece set of 5.0mm high-speed steel drill bits from Ingco, supplied in a poly bag under the model DBT1100503. Each bit measures 86mm overall with 52mm of usable flute length, so it suits a standard drill chuck and reaches through typical sheet and plate thicknesses without the shank bottoming out. A single 5.0mm diameter is a common choice for pilot holes ahead of larger bits and for clearance holes on small fasteners, which makes a ten-pack practical if you drill the same size often and expect to replace worn bits. Before buying, confirm your drill accepts a bit this length and that 5.0mm matches your screw or plug size, since buying the wrong diameter wastes the whole pack. Compare against cobalt or titanium-coated sets if you work with harder metals, and against mixed-size sets if you need variety rather than repeats. HSS is the baseline for general metal, wood and plastic drilling, but it dulls faster in tough material, so consider how often you drill and what you drill into. Available on Sokonia.