Drillfactory's Customized Drilling Tools - 40mm Diameter, 4 Buttons

Drillfactory's Customized Drilling Tools - 40mm Diameter, 4 Buttons. High Quality Materials: Made from 35CrMoA steel with high grade tungsten carbide inserts for durability. Perfect Taper Match: Tapered design ensures perfect connection with tapered drill rods for efficient drilling. Advanced Manufacturing: Processed using state-of-the-art CNC machinery and mature welding technology. Cost Effective: Reliable performance and high quality make these bits very cost-effective. Flexible Customization: Offers flexible customization for color, process, and mining objects. Fast Response: Sales team responds to questions within 24 hours, excluding holidays. Strict Quality Control: All spare parts undergo strict inspection before shipping to ensure quality. Wide Application: Suitable for granite/marble quarries, gold mines, railways, and tunnels.