Sollroc SRC542 121mm RC Drill Bits

RC drilling refers to Dual Wall or Dual Tube Drilling. RC drilling applies two rods with inner and outer tubes.Air is blew down the annulus of the rod and enter into hammer and bit.Rock formation fragments crushed by bit are collected into the inter tube via air hole on the bit head. And then returned to the ground and enter into sampling system.Its hammers and bits are widely used in underground mining, quarries, hydraulic and Hydro-Power Engineering, water well drilling, Mineral exploration, anchoring hole drilling, geothermal engineering, Subway excavation, another civil engineering. Items: SRC542 121mm Drilling Bits Bit Dia(mm):121mm Air Hose:2 Gauge Buttons:8*φ14 Front Buttons:8*φ13