Diamond Tools, Diamond Saw Blade, Diamond Cutting Tools manufacturer / supplier in China, offering Bu to 1-1/4"-7 Unc Male&5/8"-11 Female Adapter, Bu to 1-1/4"-7 Unc Exchange Adapter for Core Drill Bits, Bi To1-1/4"7 Unc Male&5/8"-11 Female Exchange Adapter for Diamond Core Drill Bits and so on.