Description The Spyder Dado Blade Set is the ideal choice for ultra clean cuts in wood materials. Over-sized and resharpenable NiCo teeth are sharpened in an alternating tooth grind with a flat grind (ATG F) to provide clean cuts in both soft and hard woods. Tracking straight with reduced friction, heat and noise, circular saw blades are the professional choice for cutting groves in all new wood materials from 1/4-in to 7/8-in in width. Up to 6x the life of standard carbide blades. Set includes: (2) 12-tooth cutting blades, (3) 2-tooth chipper blades, (3) spacers, (8) alignment shims.