Sollroc DTH bit SD12, DHD1120, NUMA120, NUMA125

● Bit Diameter: 305mm to 508mm ● 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 DHD1120, SD12, NUMA120, NUMA125 Dia.305mm gauge buttons 12x18mm, center buttons 36x16mm Dia.311mm gauge buttons 12x18mm, center buttons 36x16mm Dia.330mm gauge buttons 16x18mm, center buttons 42x16mm Dia.356mm gauge buttons 16x19mm, center buttons 48x16mm Dia.381mm gauge buttons 16x19mm, center buttons 48x18mm Protection buttons and fishing device can avaible. We also can provide other models DTH bits for 2" to 18" DTH hammer. Shock absorbers and Hexagonal Joints are available.