Introducing Liduo 9 Pc Drill Bit tool kit- all in one solution for your versatile and efficient tasks. The product is made of the best grade anti-rust iron. It is polished/ coated with a specialized anti-rust chrome/ black oxide finish and is made for long term durability. The high-speed drill bits are available in 5, 6, 8 mm variants. These drill bits can easily fit with any electrical or manual drilling machine and can easily drill tough surfaces like concrete, granite, clinker, brick, wood etc. The drill is designed in innovative flute design that removes material faster for easier drilling. It is coated with titanium nitrate that provides less friction and thus generates less heat. This is a high rated drill i.e. 4x faster than standard HSS-R drill bits. It drills clear, accurate, blurr free holes due to recessed cutting edges. It is a well-organized professional drill tool kit that comes in a sturdy box for convenient storage. Upgrade your tool kit today for efficiency and precision in every task.