Bosch 11221DVS
Used this hammer drill to bore 1-1/4 inch holes for lag bolts in foundation. Took about 5 minutes per hole when drilling to 6 inch depth. Probably would have taken less time with a sharper carbide bit, but Bosch has a powerful tool for what is a brutal job. Vibration while still present was less than I expected0 of people found the following review helpful.
The grip and trigger mechanism are well integrated, especially the front grip, and long enough to accommodate different body styles (I've got long arms; my buddy is the opposite: we both liked the tool's feel) The first thing you'll notice about Bosch's rotary hammer is its great ergonomics, which clearly
were a major consideration in the design of the hammer For a rotary hammer, design is especially critical during overhead and down-drilling operations, where fatigue can quickly rear its ugly head. Constant ResponseTM Circuitry - - Provides
soft-start - Maintains constant speed under load - Provides overload protection Variable-speed reversing
trigger - for accurate bit starting, as well as removing fasteners or bound bits ... »»
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