China T45 525mm Bit Shank Adapter for Atlas Copco Cop 1838 1550 1440 Hydraulic Rock Drill Tool Mining Machinery Fittings, Find details about China Hydraulic Shank Adapter, Rock Drill Tools from T45 525mm Bit Shank Adapter for Atlas Copco Cop 1838 1550 1440 Hydraulic Rock Drill Tool Mining Machinery Fittings