Promax Extreme PM-0782402 Stack dado set, 8-inch by 24 tooth, 5/8-inch arbor, C-4, wood case A great stacked dado set for the occasional needs of your shop woodworker. Two 24-teeth outside trimmer blades for a clean finish cuts - five 2-teeth chippers blades - cuts a flat bottom finish. Fits: most table power saws, with a minimum 2-hp rating Shop grade C-2 carbide Max RPM: 7,000 rpm