12PCS M14 Drill Bit Set Diamond Dry Hole Saw Kit 6-68mm For Tile Marble Granite

12PCS/SET M14 Dry Vacuum Brazed Diamond Drill Core Bit Set Drilling Hole Saw Tools For Tile Marble Granite Stone. Dry drilling without water feeding, 6mm-12mm bits with Wax inside helps cooling the bits?? Wide application for drilling tile ceramic granite marble stone.... Vacuum Brazed technology provide much longer working life than electroplated ones (Generally 3-5times)??

Less Chipping, Minimizing breakage, less heat generation, Better finish quality?? High diamond exposure rate provides a faster and more aggressive drilling. Application: Used for opening holes in marble, ceramic tiles, granite, pebbles, walls and other materials.

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