Makita HR2811F 1-1/8 Inch Rotary Hammer SDS-Plus with 4-1/2 Inch Angle Grinder Powerful 7.0 AMP motor with 0-1,100 RPM & 0-4,500 BPM for 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 transfer efficiency for more power and longer tool life Extended life brushes are longer for more work between service intervals and less downtime 3-mode operation for ""Rotation Only"", ""Hammering with Rotation"" or ""Hammering Only"" ""No hammering when idling"" function helps increase tool life Recessed lock-on button for continuous operation L.E.D. light illuminates drilling surface for more productivity in low light applications Powerful, compact, ergonomic design with padded grip and side handle for increased operator comfort One-touch sliding chuck for quick bit changes Accepts SDS-PLUS bits (1) 4-1/2"" 7.5 AMP Angle Grinder (9557NB) HR4013C HR2621 HR2611F HR2475X2 HR2475 HR4510C HR3210C HR2811F HR2470F HR4002 HR5210C HR4041C HR1830F HR4001C HR4010C HR2432 HR5000 1-1/8" Rotary Hammer with powerful 7.0 AMP motor with 0-1,100 RPM & 0-4,500 BPM for 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 3-mode operation for "Rotation Only", "Hammering with Rotation" or "Hammering Only" 4-1/2" Angle Grinder with 7.5 AMP motor for high output power in a more compact tool (only 4.5 lbs.)