Why the Expert? Abracs Step DrillsMulti-size cone drill bits that let you drill different diameter holes with one bit, ideal for sheet metal and thin materials. Engineered from high-speed steel (often Tin-coated for longevity), each step drill has a series of incrementally larger steps (e.g., 420mm) to quickly enlarge holes to the desired size without changing bits. The shank is designed with three flat sides (3-edged shank) to prevent chuck slippage, so the bit wont spin under heavy load. A dual cutting edge geometry on each step ensures fast, smooth drilling and clean, round holes in materials like thin steel, aluminium, plastics, and even wood. Abracs step drills streamline your workperfect for electricians and HVAC installers making conduit or pipe openingsoffering efficient performance, reduced bit changes, and chatter-free operation for any job requiring varied hole sizes. Key Feature: Designed for dependable day-to-day performance across regular trade, maintenance