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 expected Bosch 11221DVS 7/8-Inch SDS Rotary Hammer
I've used this drill/hammer for the last 3 years to drill hundreds of holes, in my brick wall house and at friends. Very powerful drilling, quiet operation, almost completely dust free. Takes about 1.5 seconds to drill the usual 1/4" hole. The assembly and removal of the sucking hose and arm, every time I take it from the case and back, is a small nuisance. The sucking cup around the drill is non-transparent, which makes it cumbersome to precisely see the spot to drill - you need to pull the arm spring a bit, aim, then hold steady and fire. All in all - well worth the trouble - the power and cleanliness makes it a joy to drill. - Corded - Rotary Hammers - Bosch - Hammer Drill'
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