... ideal for cutting ceramics, fiberglass, hardwood, cast iron, composite CARBIDE GRIT HOLE SAWSThe long-lasting choice for cutting holes in ... , or so thin they would strip bi-metal or chip carbide teeth.Ideal for cutting ceramics, fiberglass, hardwoods, cast iron, ... wear and abrasion with shock resistant back.Tungsten carbide grains are bonded to alloy backs with a gulleted, snag resistant edge. cutting ...