Bahco Replacement Hacksaw Blades. Features: Replacement blades for 12" hacksaws Blade back made of strong, flexible spring steel with a tooth line of super high speed steel Bi-metal: precision ground teeth for all kinds of metal sawing Tungsten Carbide: specifically designed for cutting carbon fiber Bahco, a Snap-on Company Specs: Description:Tungsten Carbide Length:12" Teeth:n/a