Diablo Progressor blades have a progressive tooth pattern that changes from high teeth-per-inch (TPI) on the shank end to low teethper-inch towards the tip of the blade. The result of this design is that the same blade can be used to cut both thin and thick materials with improved finish and higher efficiency. The Progressor blades are ideal when switching from one material to another, eliminating the need for blade changes and time saving on the job.