Grade: Sweden tungsten steel RX7 Density g/cm3: 14.8 Hardness HRA: 93.1 Flexural strength N/mm2: 3000 Carbide Taper Tooth Product details: 1. Mainly used for medium-and small-scale tooth carbide ball for inserts Built-cone drill and impact drill, drilling in soft and hard rock, but also can be used for other drilling alloy film. 2 has excellent wear resistance and toughness, and higher than similar products Drilling and Tunneling speed. Tooth series solder ball head passivation long life cycle, it does not wear life is about the same diameter blade grinding times life titles drill head 5-6 times, help save auxiliary hours, reducing manual labor and expediting the speed of workers.