General description The Makita HR4013C 40mm AVT SDS Max Rotary Hammer is designed for high operating efficiency and comfort, featuring an exceptionally low level of vibration. It includes a one-touch sliding chuck for easy bit installation and removal, along with an operation-mode change lever conveniently located on the top of the motor housing to minimize the risk of breakage. The soft no-load function automatically reduces motor speed during idling to further suppress vibration, while an LED service light alerts users when it's time to replace the carbon brush, preventing potential damage to the gearings. Technical specifications Input Power: 1,000W No Load Speed: 250-500/min Impact Rate: 1,450-2,900/bpm Impact Energy: 8.0 joules Max in Concrete: 40mm Weight: 6.8kg Vibration K factor: 1.5 m/sec² Vibration (Chiselling): 4.5 m/sec² Vibration (Hammer Drilling): 5 m/sec² Usage In hammering mode, the on/off switch can be toggled between two settings to accommodate continuous or