Tough Bits. If you accidentally hit rebar with a SpeedHammer Power SDS-plus Masonry Bit, you might be able to keep the cursing to a minimum. This new bit — which purportedly contains twice the carbide of a standard masonry bit — has a tip engineered to chew through rebar at high speed without losing its edge, says the manufacturer. The bits come in 6-, 8-, and 12-inch lengths, with diameters ranging from 3/16 to 3/4 inch. They cost $8 to $40. Irwin Tools, 800/464-7946,

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