Australian made Almonte core saw blades are the product of years of extensive research and development in the mining and mineral exploration industry. The Black Blade is used to cut hard to very hard cores e.g. Magnetite & banded iron. The Green Blades are an alternative to the Black Blades and will also cut hard to very hard core. The Orange Blade will cut medium to hard material, and the Yellow blade will cut soft to medium materials. Available in 12" and 14" blade diameters.