Sirius Premium PRO2 Circular Saw blades are made especially for cordless saws Ideal for rip or cross cuts through timbe and Wood , Specifications • Blade Diameter: 165mm • Blade Bore: 20mm • Width of cut: 1.7mm • 24 & 40 Teeth Perfect Ultra-thin, tensioned steel Blade Smooth Cuts in Timber Wood ,Great for Extending Cordless Saws battery run time.