Makita HR5000 2-Inch Rotary Hammer Spline Powerful 11.0 AMP motor delivers 2,100 BPM for the most demanding applications 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"" for multiple applications AC/DC switch for use with alternative power source All-ball and needle bearing construction for longer tool life Large comfortable grip swivels 360 for easy handling ""Spline"" type drive system for maximum power Factory grease packed for reduced maintenance Accepts Spline bits Hex Wrench (#4; 783202-0, #5; 783203-8, #6; 783204-6) Tool Case HR4013C HR2621 HR2611F HR2811FX HR2475X2 HR2475 HR4510C HR3210C HR2811F HR2470F HR4002 HR5210C HR4041C HR1830F HR4001C HR4010C HR2432 All ball and needle bearings for longer tool life Powerful 11 amp motor for heavy duty use Torque limiting clutch Spline" type drive system for maximum power Easy lever change from "hammering only" or "rotation with hammering"