PORTER-CABLE 12810-10 Riptide 7-1/4-Inch 24 Tooth ATB Thin Kerf Crosscutting and Ripping Saw Blade with 5/8-Inch and Diamond Knockout Arbor Durable 7-1/4-inch (184mm) saw blade with thin-kerf design reduces drag Blade features 24 carbide tipped teeth for greater performance and extended life Computer-mapped cooler vents keep the blade cool while cutting Blade has 24 teeth, 5/8-inch arbor, and a maximum spin speed of 8,300 RPM Blade cosmetic design may vary (eg black logo instead of red logo)