Place of Origin : Hebei,China
Self-drilling ESS bit used for strong fractured rock formations.
Self-drilling anchor ESS bit, also known as self-drilling anchor TC (tungsten carbide) button bit. ESS bit used as a drill string and flushed with water, air or cement grout. It's usually used for strong fractured rock formations.
R25, R32, R38, R51, T76, T30, T40, T52, T73, T103
