TUSK MIDDLE TOOTH BI-METAL SAW BLADE TUSK General Purpose Bi-Metal Blades are designed for Flush or Plunge cutting situations (clean straight cuts where you stab the blade into the surface). These blades are ideal for remodelling jobs requiring general cutting of lighter gauge nail embedded wood. This demolition blade is also great for cutting Fibreglass, PVC, copper pipes and soft metal mesh. NB: Cutting any type of metal will reduce the life of the blade.