Black & Decker BL186N. Product design: Pistol grip drill, Chuck type: Keyless. Idle speed (max): 1650 RPM, Drilling diameter in wood (max): 3.5 cm, Drilling diameter in steel (max): 1.3 cm. Power source: Battery, Battery technology: Lithium-Ion (Li-Ion), Battery capacity: 1.5 Ah. Vibration emission: 1.7 m/s²