Get down to business with the Pro Grade Diamond Hole Saw Drill Bit 1-1/4" from Superior Tools & Supplies. This tile saw features a diamond grid edge that tackles any hard material, including porcelain, quarry tile, slate, ceramic, marble, travertine and granite. The slotted design of this carbide hole saw moves waste away to let you drill a hole quickly and efficiently. Use only with a water cooling system for safe installation.