Makita HR4511CV SDS-Max Combination Hammer with Dust Extraction Electronically controlled 8 kg 45 mm SDS-Max combination hammer with a power of 1350 Watt. Equipped with Smart Impact Technology and Torque limiter. Special features With rotation stop suitable for chiselling Ideal SDS-Max combination hammer for holes up to 28 mm, but can handle up to 45 mm Due to the lock button in chiselling position, also very suitable for breaking work Low vibration level due to active Anti Vibration Technology Up to 50% faster working thanks to Smart Impact Technology Constant impact and rotational force, even under heavy load Equipped with a safety clutch against jamming LED indication warns in good time for preventive maintenance or carbon brush wear Large D-handle is adjustable in multiple positions Equipped with adjustable impact force for breaking Impact stop prevents damage to the drill chuck: impact mechanism only activates under load Technical specifications Power input: 1350 Watt Chuck/connection: SDS-Max No-load speed: 130 - 280 rpm Impacts per minute: 1250 - 2750 ipm Impact force: 13 Joule Variable electronic speed control: yes Constant electronics: yes Safety clutch: yes Softgrip: yes Smart Impact Technology: yes Impact stop: yes Rotation stop: yes Rotation mechanism switchable off: yes Soft start: yes Number of adjustable chisel positions: 16 Max. drilling capacity (wood): n/a Max. drilling capacity (metal): n/a Max. drilling capacity (concrete): 45 mm Max. drilling capacity (core drill): 125 mm Ideal drilling range (concrete): 14-28 mm Cable length: 5.0 m Vibration hammer drilling: 9.5 m/s² Vibration chiselling: 8.5 m/s² K: 1.5 m/s² Sound pressure level: 93 dB Weight: 8400 gram Length: 458 mm Width: 136 mm Height: 288 mm Standard Included Depth stop Dust adapter Documents Drawing and parts list User manual