... 2.Diamond Segmented Core Bits for Granite 3.5/8"-11,M14,3/8"-3" We have the following workshops: 1. Workshop 1: diamond electroplated products: diamond ... tools, like files, hole saws, grout removers, wires, etc. 5. Workshop 5: titanium tubes and stainless steel tubes used in food, chemical ... Japan, Germany, the USA and Australia Diamond Segmented Core Bits for Granite 5/8"-11,M14,3/8"-3"