Sollroc DTH bit NUM100, SD10

● Bit Diameter: 254mm to 330mm ● Bit Face: Flat, Concave, Convex and Drop-Center ● Button Shape: Spherical, Ballistic, Parabolic and Conical ● Bit Shank: Sandvik, Atlas Copco, Ingersoll-Rand, Halco, Bulroc etc. ● High quality alloy steel and tungsten carbide, Optimum design, Multiple precision heat-treatment. ● Highest penetration rate, Maximum wear resistance, Longest lifespan and outstanding performance. Shank SD10, NUMA100 shock absorber and Hexagonal Joints are available.