8Pcs HSS Twist Drill Bit Set Large Heat Treated Industrial

Description: This HSS drill bit set is specially designed for professionals, it suits DIY fans tool kit as well. These drills are made of hardened heat treated steel, so they are very durable to use. Features: 1. Made of hardened heat treated steel, very durable to use. 2. They can provide the perfect cut every time, suitable for high speed drill bit. 3 . High quality HSS drill bits have reliable performance and durability when drill holes on plastics, Aluminum copper with a thickness of 1mm and many other types of materials 4. There are 8 different sizes, and co mes with a hard wooden packing case, ensure deposit safely and take easily. 5. Suitable for carpenter, builder, electrician, workshop, DIY, domestic crafts, amateurs, stylist,etc. 6. Fit into power tools chuck securely and eliminates slip. Specifications: Material: HSS Shank Diameter: 1 2inch Shank Type: Triangle Surface Treatment: Polishing & Nitrogenization Size: 14mm, 16mm, 18mm, 19mm, 21mm, 22mm, 24mm, 25mm Weight: Approx. 1788g Length: Approx. 150mm 6inch Package Include: 1 Set x Twist Drill Bit .