hiltil impact driver
Photo: Bill Mazza
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Hilti SID18-A

Price: About $400; us.hilti.com

Our two cents: Great performer, right up there with Panasonic and Makita, but the longer recharge time keeps it out of the top spot.

Highlight: Four LEDs and easy-to-push button to change the impact rate.

Test results: Drove 168 4 ½-inch SDS screws on one charge with the tool on its highest setting. Drove a 6-inch SDS screw in 12 seconds with the tool on its highest setting. Drove a 2 ½-inch deck screw in 13, 16, and 22 seconds on the high, medium, and low settings, respectively. Drilled a ¾-inch hole in 3, 8, and 15 seconds on the high, medium, and low settings, respectively. Average recharge time: 55 minutes.

Tool stats: 3.8 pounds; three speeds; maximum ipm: 3,450; maximum rpm: 2,500; maximum torque: 1,460 in.-lbs. Includes built-in LED, brushless motor, battery-life meter, two-year tool warranty; kit includes two 3.3Ah lithium-ion batteries.
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