Makita DHR243RMJ 18v 24mm SDS+ Plus Brushless Rotary Hammer Drill inc 2x 4.0Ah Batteries, DC18RC Charger & Quick Change Chuck Makita DHR243 models are 24mm (15/16\") cordless combination hammers powered by a single LXT 18V Li-Ion battery. It\'s essentially the DHR242, but with this version you get the Quick Change Chuck (QCC) for easy switching to standard straight shank drill bits. This drill was released to replace models BHR200 / BHR202. FEATURES Efficient Brushless DC motor provides higher productivity than that of 18V cordless combination hammer model BHR202 Able to drill in concrete as fast or faster than 24V cordless combination hammer model BHR200 Supplied with Quick Change Chuck for using straight shank drill bits Easy-to-grip handle ergonomically designed to give maximum power thrust Ergonomic handle provides a sure and comfortable grip in any operation including overhead applications and drilling with palm-up or palm-down grip 3 mode operation: 1. Rotation + Hammering 2. Hammering only 3. Rotation only The tool body is seperated into the upper and lower housings at the foot of handle portion where the houses are jointed with vibration absorbing cushion rubbers Unique rubber joint construction suppresses the transmission of vibration to battery terminals, minimizing battery failures such as terminal breakage or poor electrical contact SPECIFICATION Battery Voltage: 18v Capacity in Concrete: 24 mm Capacity in Steel: 13 mm Capacity in Wood: 27 mm Impact energy: 2.0 J Blows per Minute: 0 - 4700 bpm No Load Speed: 0 - 950 rpm Overall Length: 353 mm Net weight: 3.4 kg Brushless Motor: Yes Quick Change Chuck: Yes NOISE & VIBRATION Sound Pressure Level (LpA): 89 dB (A) Sound Power Level (LWA): 100 dB (A) Uncertainty (K): 3 dB (A)  Vibration: Drilling Metal: 2.5 m/sec² Vibration: Hammer Drilling: 13 m/sec² Vibration: Chiselling: 11 m/sec² Uncertainty (K): 1.5 m/sec²