This range can be divided into two categories, defined by the manufacturing material. The Bi-Metal blades feature milled and hardened HSS teeth for standard cutting on hard & soft wood, wood with nails, sheet steel, plastics, aluminium and other non-ferrous metals. The Titanium coated Bi-Metal Blades are manufactured with HSS teeth for fine, straight cutting. The addition of the Titanium coating results in a longer lasting, ultimate performance blade.