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, Forged Drill Rod Connector for High Stress Applications in Underground Mining Providing Superior Grain Flow and Impact Resistance Compared to Machined Component and so on.