Description The BlueSpot Tools Drill & Tap Set is made from hardened steel for increased durability and to ensure clean threading. It includes a variety of common tap sizes and the corresponding drill bits needed for each thread size. Suitable for working with plastics (use distilled water as a coolant), steel, aluminum, and other non-ferrous metals. The set is stored in a sturdy metal case for easy access and organization. Specifications Number of pieces: 15 Drill sizes: 2.5mm, 3.3mm, 4.2mm, 5mm, 6.8mm, 8.5mm, 10.2mm Tap sizes: M3, M4, M5, M6, M8, M10, M12 Material: Hardened steel Compatibility and Accessories Compatible with plastics, steel, aluminum, and other non-ferrous metals Includes a tap wrench for threading Installation Use the appropriate drill bit for the desired thread size Drill a hole in the material using the corresponding drill bit Insert the tap into the tap wrench and thread it into the drilled hole to create a thread Usage Ensure the material is properly secured