LYNDON - 4mm - 12mm - HSS Step Drill Step drills are tools that are commonly used in metalworking, they come as a single drill bit with progressively sized ridges or grooves. The different sizes, known as steps, allow for one tool to be used for a variety of settings. They are a popular tool as they can help complete big & small jobs without having to switch tooling.  Non-slip point Cuts round, parallel, burr-free holes Stronger and more rigid than standard drills For cutting steel, non-ferrous metals and plastics This is not a stock item therefore please allow 1-3 working days for dispatch. As this is not kept as a stock item, this is non-returnable & non-refundable. LYNDON - 4mm - 12mm - HSS Step Drill