Makita 1-9/16" Rotary Hammer, Spline, 2-mode, var. spd., case. Manufacturer's Product Number: MK-HR4041C.

The Makita HR4041C 1-9/16 in. Spline-Shank Rotary Hammer Drill features a powerful 11 Amp motor engineered with field-core interlocking steel laminations, a dual ball-bearing armature and a large-surface commutator for an efficient transfer of power. It delivers up to 230 - 460 RPM and 1,300 - 2,600 BPM and has 2 modes for hammering only and hammering with rotation. Soft-start functionality facilitates control and improved accuracy, while sequential impact timing promotes faster work.

Features

• Powerful 11 AMP motor delivers 9.5 joules of impact energy to handle the most demanding applications
• Constant speed control automatically applies additional power to the motor to maintain speed under load to complete the most challenging jobs
• Soft start suppresses start-up reaction for increased accuracy
• Variable speed control dial enables user to match the speed to the application for greater versatility
• Torque limiting clutch engineered to prevent gear damage by automatically disengaging gears if the bit binds
• One-touch tool retainer action for easy accessory installation and removal
• Sequential impact timing delivers timed hammering during rotation to minimize overlapping bit impacts for up to 50% faster drilling
• Automatic brush cut-off protects commutator from damage for longer tool life
• 2-mode operation for "Hammering Only" or "Hammering with Rotation" for multiple applications
• "No hammering when idling" function helps increase tool life

Specs

• AMPS : 11
• Max. Capacity (concrete drilling) : 1-9/16"
• Optimum Range (concrete drilling) : 5/8" - 1-1/4"
• Max. Capacity (concrete drilling w/ core bit) : 4-5/8"
• Impact Energy (Joules) : 9.2 J
• Impact Energy (ft.lbs.) : 6.8
• Blows Per Minute (variable speed) : 1,300 - 2,600 BPM
• No Load Speed (variable speed) : 230 - 460 RPM
• Vibration Control  : No
• Vibration (m/s²) : 15
• Overall Length : 16-7/8"
• Cord Length (ft) : 16.4'
• Net Weight : 14.8 lbs.
• Bit Type : Accepts Spline shank
• Power Type : Corded
• Bind-Up Control : No
• Shipping Weight : 20.3 lbs.
• UPC Code : 088381-081191

WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:
• lead from lead-based paints,
• crystalline silica from bricks and cement and other masonry products, and
• arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles. For more information, go to www.p65warnings.ca.gov