Cheap drill bits for aluminium, Buy Quality drill bits carbide directly from China drill titanium Suppliers: 40mm Core Drill Bit for Marble Granite Stone Material Cement Sintering Diamond Bit
40mm Core Drill Bit for Marble Granite Stone Material Sintering Diamond Bit Description: Product Name: Metal Glass Hole Saw Cutting Diameter:6~60mm Suitable for cutting material: Marble Granite Stone Material Cement Attention: Please control the speed slow,especilly open and done moment,please slow . During drilling, Please continue to add water cooling the drill bit. In the b eginning, 45 ° a ngle positioning,when stone shows Small and lunular,change the angle to 90º.