Makita HR4010C 1-9/16 inch AVT Rotary Hammer, SDS-MAX Powerful 11.0 AMP motor; efficient 1,350-2,750 BPM to handle the most demanding applications Anti-Vibration Technology is an internal counterbalance system that greatly reduces vibration and directs more impact energy to the work surface for increased user comfort and greater efficiency 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 more control and better accuracy Variable speed control dial enables user to match the speed to the application for greater versatility L.E.D. service light notifies the user approximately 8 hours before the brushes need to be replaced L.E.D. power light indicates switch failure or cord damage Torque limiting clutch engineered to prevent gear damage by automatically disengaging gears if the bit binds Sequential impact timing delivers timed hammering during rotation to minimize overlapping bit impacts resulting in up to 50% faster drilling Makita Motor Advantage engineered with field core interlocking steel laminations, dual ball bearing armature and more copper commutator bars, increasing energy transfer efficiency for more power and longer tool life Automatic brush cut-off protects commutator from damage for longer tool life 2-mode operation for ""Hammering Only"" or ""Hammering with Rotation"" One-touch sliding chuck for quick bit changes Lock-on slide switch for continuous operation (""Hammering Only"" mode) Ergonomic soft grip provides more comfort and control Externally accessible brushes for greater serviceability 16.4 ft. jobsite cord for greater versatility and instant power Accepts SDS-MAX bits Side Handle (416299-1) D-Handle (417003-1) Depth Gauge (321248-4) Bit Grease (194683-7) Tool Case (154677-4) HR4013C HR2621 HR2611F HR2811FX HR2475X2 HR2475 HR4510C HR3210C HR2811F HR2470F HR4002 HR5210C HR4041C HR1830F HR4001C HR2432 HR5000 Makita's Anti-Vibration Technology incorporates a counterbalance system that reduces vibration to only 4.5 m/s2 for unmatched comfort Powerful 11 AMP motor; efficient 1,350 - 2,750 BPM to tackle the most demanding jobs Preset variable speed dial with 5 settings to match the bit speed to the application L.E.D. power light indicates switch failure or cord breakage; L.E.D. service light indicates carbon brushes need to be replaced 1 year warranty