panasonic impact driver
Photo: Andrew McCaul
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Panasonic EY7550LR2S

Price: About $299; panasonic.com

Our two cents: "Drove 163 6-inch structural wood screws, twice as many as its closest competitor."

Highlight: Switch and housing meet the strictest standards for dust and water resistance.

Test results: Drove 163 4 ½-inch SDS screws on one charge with the tool on its highest setting. Drove a 6-inch SDS screw in 14 seconds with the tool on its highest setting. Drove a 2 ½-inch deck screw in 14, 26, and 40 seconds on the high, medium, and low settings, respectively. Drilled a ¾-inch hole in 3, 10, and 16 seconds on the high, medium, and low settings, respectively. Average recharge time: 72 ½ minutes.

Tool stats: 3.5 pounds; three speeds; maximum ipm: 3,000; maximum rpm: 2,500; maximum torque: 1,370 in.-lbs. Includes built-in LED, brushless motor, two-year tool warranty; kit includes two 3.1Ah lithium-ion batteries.
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