Makita HR2811F Information The Makita HR2811F is a versatile, high-powered rotary hammer that is ideal for horizontal work. It features a 6.7-amp variable speed motor that delivers 2.7 joules of impact energy, making it capable of drilling through concrete, masonry, and brick. The HR2811F also has a 3-mode operation for rotation only, hammering with rotation, or hammering only, as well as a torque limiting clutch that prevents gear damage if the bit binds. Other features include an LED light for improved visibility in low-light conditions, a vibration-absorbing back handle for operator comfort, and a one-touch sliding chuck for quick bit changes. Here is a table of the full specifications of the Makita HR2811F: Feature Spec Motor 6.7-amp variable speed Impact energy 2.7 joules Rotation speed 0-1,100 RPM Blows per minute 0-4,500 BPM Chuck type SDS-PLUS Max. capacity (concrete drilling) 1-1/8" Max. capacity (concrete drilling w/ core bit) 3-1/8" Vibration (m/s²) 15 Weight 4.6 p...