SunFen company is a professional manufacturer of rock drilling tools (consumables for Mining, Quarrying, Tunneling, Construction Industries etc.) as we are one of the key Rock Drill Tools makers in China. We are exporting the following products: --Rock Drilling Tools: Extension Drill Rods, Integral Drill Rods, Taper Rods, Breaker Tools (Pneumatic Drill Rods), Chisel/Cross/Button/DTH Bits, Coupling Sleeves, Shank Adapters.