Hole Saw,hole cutter Full series of hole saws for cutting masonry building materials, such as concrete, bricks, stone blocks HOLE SAWDiamond core drills are on silver brazing type and laser welded type for choice both professional cutting performance on concrete, brick,reinforced concrete, etc. Laser welded ones can realize heavy-duty dry cutting.Max cutting depth: 68mm to 450mmDiameter from 25mm ...