Diablo finish 8 1/4in. , 40 tooth Circular saw blades are ideal for smooth finish crosscuts in hardwood, softwood or plywood. They are a perfect choice for excellent rips and crosscuts using a portable saw. They deliver a smoother edge than framing blades, but still provide an excellent combination of cutting speed and long life. A great choice for Jobsite finish cuts in 1x, decking, fencing, fascia and plywood. Blade diameter in. 8 - 8 1/4, blade speed RPM 9, 000, Arbor Knockout Yes, Arbor size in. 5/8, teeth Qty. 40, tip type carbide, tooth grind ATB, blades Qty. 1, corrosion-resistant Yes, engineered venting Yes, blade use finish. Tico Hi-Density carbide is specifically designed for each application to improve performance Perma-Shield nonstick coating shields the blade against heat, gumming and corrosion super-thin laser cut kerf for fast, durable and clean cuts tri-metal shock-resistant brazing allows carbide tips to withstand extreme impact for maximum durability Hardened steel body for a longer life and sharper cutting edge laser-cut Stabilizer vents trap noise and vibration and stabilizes the blade laser-cut heat expansion slots allow blade to expand due to heat build-up, keeping the cut true and straight.