4pc Wood & Metal Multi-Tool Set The 4pc set comprises of 2x Wood Blades and 2x Wood & Metal Blades. The wood blades are manufactured using Chromium-vanadium steel with milled teeth for a standard or plunge cut and are suitable for use on wood/timber, plasterboard, plastics and similar material applications. The Wood & Metal Blades are Bi-Metal. They are manufactured with milled & hardened HSS teeth for standard cutting on hard & soft wood, wood with nails, sheet steel, plastics, aluminium & other non-ferrous metals.