The Makita HR3001CJ SDS Plus Rotary Hammer offers 3-modes of operation: Rotation only, Hammering with Rotation, and Hammering only. Variable speed with constant speed control and forward/reverse rotation for more comfortable handling, even in demanding applications.Drilling efficiency has been drastically increased by the redesigned hammering mechanism. A 'no hammering when idling' function helps increase tool life. Fitted with an anti-vibration main handle for increased comfort. A torque limiter and double insulation increase user safety. Supplied with: 1 x Depth Stop, 1 x Side Handle and 1 x Type 4 MAKPAC Connector Case. Specifications: Modes: Rotation only, Hammering with Rotation, and Hammering only.Input Power: 1,050W.No Load Speed: 0-840/min.Impact Rate: 0-4,500/bpm.Impact Energy: 3.9 joules.Capacity: Concrete: TCT Bit 30mm, TCT/Diamond Core 80mm; Wood 32mm, Steel 13mm.Weight: 4.1kg.