Although diamond blades are more expensive than abrasive wheels, OX Tools says its PU10 blades will last up to 50 times longer. The manufacturer says the blades cut quickly and smoothly, thanks to a serrated edge, and its reinforced center plate makes them safer to use while dampening vibrations. The Chinese-made blades are available in diameters from 4 inches to 14 inches. Online prices range from $30 to $173, depending on the diameter.

OX Tools,, 888/850-6710