Compact, lightweight yet packs a punch. This Makita SDS can drill up to 65mm in concrete with a diamond core The Makita HR1840 is a compact and lightweight 18mm SDS-PLUS Rotary Hammer that has been adapted for SDS-Plus bits. It can drill up to 65mm in concrete with a diamond core making it suitable for the most demanding tasks. The one-touch sliding chuck makes for easy bit change increasing productivity. It features two operation modes: Rotary Hammer and Rotary Only depending on the application. Features: Variable speed trigger Forward / reverse rotation Torque limiter Double insulation Adapted for SDS-PLUS bits Rotary Only / Rotary Hammer modes One-touch sliding chuck for an easy bit change Lock-on button Comes with: Side handle Depth stop Carry case Specification: Max in Concrete (TCT bit): 18mm Max in Concrete (TCT Core): 35mm Max in Concrete (Diamond Core): 65mm Capacity in Steel: 13mm Capacity in Wood: 24mm Impact Energy: 1.4 J Blows per Minute: 0 -4,800 bpm No Load Speed: 0 -2,100 rpm Input Wattage: 470 W Net Weight: 2.0 kg Vibration: (hammer drilling into concrete): 10.0 m/s_ (drilling into metal): 3.0 m/s_ Vibration K Factor: 1.5 m/s_ Sound Pressure: 87 dB(A) Sound Power Level: 98 dB(A) Sound K Factor: 3 dB(A)