BRSCHNITT-Diamond 1pc 20/35/68 Lightning Teeth Drill Bit Hole Saw for Porcelain Tile Crowns Granite Marble Stone

This drill bit set is designed for drilling into porcelain tiles, granite, marble, and other hard surfaces. It comes in three sizes and can be used both dry and wet.

• The description claims that the drill bits are good for debris and heat dissipation, leading to better performance.
• The description claims that the drill bits have a longer working life.