Package Includes: 1*Step Drill
Size: Large*4-32mm/15 Tiers, Medium*4-20mm/9 Tiers, Small*4-12mm/5 Tiers. Set of 3 large, medium, and small, comes with a storage bag for easy carrying.
Material: High speed steel, titanium coated surface, clear color, sharp drill, titanium coating for long life, sharp and durable.
Features: Multiple sizes and enlargement corrections are possible to spread holes sequentially from small to large holes.
Features: Multiple sizes of drilling and enlarging holes Titanium coating for light sharpness and excellent durability. This 3-piece set of drills allows you to drill and chamfer various sizes at the same time to make work more efficient.
Applications: For home DIY, wood, thin steel plates, stainless steel, aluminum wood, FRP and resin, etc., stainless steel can drill holes up to 0.04 inch (1 mm) and aluminum up to 0.1 inch (3 mm).
How to Use: Regular drills are sized and only one size can be drilled in this step drill is a tool that allows you to adjust the hole in order to expand the hole from small to large holes, so you can use it to drill multiple sizes and modify the enlargement of holes. So you dont have to use multiple drills, so its more efficient. The step drill is mainly used with an impact screwdriver. Slowly press the impact driver until the size you want to drill a hole. NEVER OPEN! This may cause injury or damage.
If you have any problems or concerns with the product, please do not hesitate to contact us. We will respond quickly to your satisfaction.