Button Bit, Shank Adapter, Rock Drill manufacturer / supplier in China, offering Custom Length Mining Drill Stem Manufactured to Specification for Specialized Applications Including Raise Boring and Shaft Drilling in Underground Mines, Diamond Impregnated Core Drill Rod for Extremely Hard Rock Formations in Precious Metal Mining with Enhanced Matrix Bonding for Abrasion Resistance, Water Well Drill Rod for Mine Dewatering Applications Featuring Heavy Wall Construction and Acme Threads for Quick Makeup and Breakout in Field Conditions and so on.