Silverline Tungsten Grit Holesaw Kit 8pce 33 83mm Dia

Amazon

For drilling through floor and wall tiles 1/2 Inch round tungsten carbide grit file for removing sharp edges Includes 8 mm pilot drill and 33, 53, 67, 73 and 83 mm tungsten carbide holesaws Model number: 633621, Weight: 3.88895430168 pounds, Manufacturer: SLTL4

Electrical World

Contains 33, 53, 67, 73 and 83mm tungsten carbide grit holesaws; 8mm pilot drill; universal arbor and half-round carbide grit file. Ideal for drilling through wall or floor tiles.