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You're likely to hear about impact drivers this holiday season as manufacturers hawk their ability to drive and loosen long or difficult bolts. But so far, no one is shouting about the fact that these new cordless tools are loud enough to damage your hearing.
The 10 impact drivers we tested averaged 104 decibels at ear level under heavy load--far louder than standard cordless drills, as loud as chain saws, and well above the 85 dBA at which we recommend hearing protection. In fact, they're among the noisiest power tools sold. Yet warnings about hearing protection are buried in their owner manuals.
You may still want an impact driver for its added power. ...