Hole Saw,hole cutter Full series of hole saws for cutting masonry building materials, such as concrete, bricks, stone blocks ... drills are on silver brazing type and laser welded type for choice both professional cutting performance on concrete, brick,reinforced ... : 68mm to 450mmDiameter from 25mm to 300mmTungsten grit edged hole saws can dry&wet cutting those bricks, concrete, ceramics, tiles, ...