Powerful 10.0A motor delivers 2500 BPM for the most demanding applications. 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 for more power and longer tool life. 12 bit angle settings allow the bit to be set at different positions for operating convenience. Automatic brush cut-off protects commutator from damage for longer tool life. 2 mode operation for hammering only or hammering with rotation. No hammering when idling functions helps increase tool life. 1-touch sliding chuck for quick bit changes. Soft-grip handle provides increased comfort on the job. Accepts SDS-MAX bits.

No. HR4002: Chuck Size: 1-9/16", Amps: 10.0, Impacts per Minute: 2500