KATSU FIT-BAT 21V Cordless Brushless Impact Screwdriver 1/2 Inch 400Nm Cordless Impact Brushless Motor Rechargeable battery operated, much more convenient for outside operation; Compact size and lightweight, can be used by single hand easily;Brushless motor for longer using life;Perfect for site work, curtain installation, building, auto maintenance etc; With brushless motor the battery lasts almost twice longer than normal brushed motors; Comfortable soft and secure grip, built-in LED light illuminates the working area, forward/reverse operation. Specification: Power supply: Rechargeable Li-ion battery Voltage: DC 21V Speed: Dual speeds Cordless Tool Type: Impact Screwdriver No-load speed: 0-2800RPM Shock frequency: 0-3500RPM Maximum torque: 400N.M Socket Size: 1/2" square drive Without battery or charger