Tough Teeth. According to Diablo, the new Demo Demon 7 1/4-inch circ-saw blade lasts longer in nail-infested and other challenging materials. Compared with a flat-tooth surface that slams into a nail all at once, its pointed-tip tooth design takes smaller bites with less shock, says the company. The carbide teeth are set into a special keyed seat to keep them from snapping off at the braze line. The blade costs $15. Diablo, 800/334-4107.

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