7 buttons drill bit

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  • BIT 45 MM SR35 (R32) Drilling accesories for tunneling

    Premium designs and steel and premium tungsten carbide insert grade T6 supplied by Boart Long year, Offers industry-leading strength and penetration rates for more productivity,Excellent straightness and hole clean quality, Get max.drilling performance for rock drill with long life to save up fuel cost rate.

  • Q7-32-722-80 Tapered Button Bit

    • Diameter: 32mm
    • Length: 80mm
    • Carbide Dimension: 7mmx7
    • Carbide Design of Tapered Buttons: Parabolic(Semi-Ballistic)
    • Water Holes: 2 on front, 1 on side.
    • Premium designs and steel and premium tungsten carbide insert grade T6 supplied by Boart Long year,tungsten carbide code No. YK05 supplied by Zhuzhou 601 factory,Offers industry-leading strength and penetration rates for more productivity.Excellent straightness and hole clean quality,Get max.drilling performance.