Makita 36V cordless rotary hammer drill (Hilti drill), model HR261 / HR261DRDX. Main technical specifications for the model: Power voltage: Works with a powerful 36V Lithium-ion (Li-ion) battery with a capacity of 2.6 Ah (BL3626). Included charger: Fast charger model DC36RA. Operating modes: Features 3 diverse work modes (rotation only, hammer drilling, and chisel/chiseling only). Maximum drilling capacity: Drilling diameter up to 26 mm in concrete, 13 mm in steel, and 32 mm in wood. Speed and impact rate: No-load speed ranges from 0 to 1,200 RPM, and impact rate up to 4,800 BPM.