Viper Vacuum Brazed Dry Marble And Porcelain Core Bit, 1-1/4"

These vacuum brazed core bits have been designed specifically for coring marble stone. They work great on marble tile, as well as harder porcelain tile. When used in combination with the Pilot Guide Drill Bit, you have greater success in making sure that the hole and the core will be precise. The guide also helps in preventing slippage of the bit during the initial stages of drilling.