Makita DHR400ZKU Twin 18v AWS Brushless Cordless 40mm SDS MAX Rotary Demolition Hammer Body Only in Carry Case The DHR400ZKU LXT Brushless and Cordless SDS-MAX Rotary Demolition Hammer has a 2-mode operation with rotational hammering and hammering only. The speed of the machine is automatically reduced at zero load to further reduce vibrations and to facilitate the targeted positioning of the chisel. Features include a one touch sliding chuck for easy bit change, a torque limiter to protect the user from snagging, electronic speed control with constant speed to avoid stalling under load and soft start to make the user experience more comfortable. \"Soft No Load\" reduces vibration of the tool body when idling which results in decreased vibration to the operator\'s hands and also minimises deflection when lining the bit/chisel. This model is also a part of the Auto-Start Wireless System (AWS) range, which can connect to compatible dust extractors with Bluetooth using the supplied Bluetooth adaptor. The dust extractor automatically runs while the tool is switch is on, and turns off when tool is off. This maximises the battery life of both products. FEATURES 18Vx2 Brushless Motor – efficient energy production more power, lower heat production and increased work on a single charge One touch SDS Max Chuck – SDS max bit can be installed by simply pressing the bit down into the chuck without the need to slide the collar XPT – Extreme Protection Technology that protects against dust & moisture even in the harshest jobsite conditions Dual LED Job light – for enhanced visibility in low light & confined conditions Two modes – hammering only for demolition applications and rotation with hammering for delivering maximum drilling performance in masonry AWS – Auto-Start Wireless System, allows the tool and compatible vacuum to run automatically while the switch trigger is being pulled AVT – Anti-Vibration technology delivers unbelievably smooth performance at just 5.0m/s2 vibration thanks to the active dynamic vibration absorber and antivibration housing Variable Speed Dial – allows the user to adjust the speed based on the material or application BL80 Motor – this newly developed patented motor delivers unbelievable power that you would expect from an AC rotary hammer SPECIFICATION Voltage: 36v (2 x 18v) No Load Speed: 250 – 500 rpm Blows per Minute: 1,450 – 2,900 bpm Shank: SDS-MAX Max TCT Bit: 40 mm Max Core Bit: 105 mm Impact Energy: 8.0 J Net Weight: 7.3 – 8.1 kg NOISE & VIBRATION Sound Pressure Level: 91 dB(A) Sound Power Level: 102 dB(A) Sound K Factor: 3 dB(A) Vibration Hammer Drilling into Concrete: 5.0 m/s² Chiselling Function: 4.5 m/s² Vibration K Factor: 1.5 m/s²