What is the function of a step drill bit?

The function of a step drill bit is to drill holes of varying diameters in metal. Unlike standard drill bits that have a single diameter, step drill bits feature a conical shape with multiple steps or levels that allow them to create different hole sizes without needing to switch bits. This versatility is particularly useful in metalworking, as it enables the user to cut multiple hole sizes smoothly and efficiently in a single operation. The design helps to minimize the risk of wandering when starting a hole, which is especially important when working with metals that can be more challenging to drill.