Sintered diamond core drill bit is one kind of diamond drilling tool.  It is mainly used to drill granite.  

Very durable

Optional diameter: 6-60mm

Delivery time: 30days

We, Hangzhou Kongs Tools Co., Ltd. is a leading manufacturer of electro-plated diamond tools, which are used in stone and construction industries, such as marble, granite, sandstone, limestone, basalt, and grit stone.

Our main products: 1. Electroplated diamond saw blades(cutting discs)2. Sintered diamond saw blades 3. Diamond tuck point blades 4. Electroplated diamond core drill bit (hole saw)5. Electroplated diamond grinding discs & wheels6. Electroplated diamond sharpeners7. Electroplated diamond burrs & files8. Diamond polishing pads9. Electroplated diamond wire saw (beads)

Diamond Granite Core Bit