For increased life (20 times or more) over carbide tipped saw blades. Available for most applications, you can set it, and forget it. If your current carbide tipped blades last 2 - 3 days, think of the increased production achieved without blade changes for 40 - 60 days. The H3D diamond blades are typically fully resharpenable up to 8 times, depending on the size of the blade and application.