To increase accuracy, model HR2611F, and model HR2621 feature Anti-Vibration Technology (AVT®) internal counterbalance system. Both models deliver 2.1 lb-ft impact energy and offer 3 selectable modes of operation: rotation only, hammering with rotation, or chipping only. Other features include sequential impact timing, variable speed trigger, and 40 bit angle settings. While HR2621 has ergonomic D-shaped handle with rubberized soft grip, HR2611F has LED light at base of pistol grip.
This story is related to the following:Power Tools | Rotary Hammers