Amana Tool PR1040 10-Inch by 40-Tooth 5/8-Inch Prestige General Purpose ATB Bore Saw Blade Rated "Excellent" for ripping and cross cutting both solid wood and plywood. 10-Inch by 40 Teeth Alternate Top Bevel grind 18-Degree Hook. Massive tool steel plate, with laser cut expansion slots allowing the blade to expand and contract from heat preventing war page. Extra large carbide teeth provide more re-sharpenings. Copper Plugs to reduce noise and vibration during operation Tension rings which maintains the blades straightness under stress of operation