Diamond Tipped Hole Saws Diamond Tipped Hole Saws For the easy drilling of large diameters in masonry, tiles, bricks, gypsum plaster, for wall sockets, pipe lines, cable ducts and discharge pipes.Sizes:25mm(1"),30mm(1-3/16"),35mm(1-3/8"),40mm(1-9/16")Category: Tungsten Carbide Grit Edge Hole Saws