The only approved James Hardie polycrystalline diamond (PCD) tipped fiber
cement saw blade. It was developed by James Hardie and Freud Diablo for
all James Hardie fiber cement products.
The four tooth design allows the blade to chip product away and creates
less dust. The HardieBlade is engineered for a long life span -- up to 60
times the life of other conventional fiber cement carbide blades.
*James Hardie® recommends that only the HardieBlade be used
when cutting there fiber cement products