32mm 34mm 36mm 38mm 40mm 42mm 6buttons 7/11/12 Degree Carbide Rock Drilling Button Bits

32mm 34mm 36mm 38mm 40mm 42mm 6buttons 7/11/12 Degree Carbide Rock Drilling Button Bits. High Drilling Efficiency: Superior to taper chisel and cross bits with longer primary drilling time. Premium Carbide Inserts: Uses high-grade tungsten carbide from Boart Longyear for durability. Customizable Colors: Available in Golden, Red, Blue, or as per customer request. 48 Years Experience: Factory specialized in manufacturing drilling tools for over 48 years. Advanced Manufacturing: Processed using state-of-the-art CNC machinery and special heat treatment. Perfect Rod Match: Accurate taper degree ensures perfect connection with tapered drill rods. Wide Application: Ideal for granite/marble quarrying, mining, railway, and tunneling. Multiple Button Options: Available with 4, 5, 6, 7, 8, or 9 buttons to suit different systems.