Bosch Power Tools and Accessories' new 7" and 9" angle grinders weigh less than 12 lbs. and are powered by a 15-amp motor that delivers 4hp for an improved power-to-weight ratios. The 1900 Series was designed for concrete surfacing, block cutting, restoration contracting and more. Bosch's new Vibration Control engineering utilizes re-designed main and side handles to reduce vibrations levels up to 50 percent, versus the competition.