Avenger AV-10026 Stack dado set, 8-inch by 42 tooth, 5/8-inch arbor, C-4 Two 42-teeth outside trimmer blades for a smooth finish cuts Featuring -Six 6-teeth full body chippers - cuts a flat bottom finish for accurate and tight fitting joints Fits most table power saws, with a minimum 2-hp rating Professional C-4 tungsten carbide Max RPM: 5,500 rpm