Cordless Concrete Vibrator, Voltage 18V DC, Shaft Length 4 ft, Head Diameter 1 in, Radius of Vibration 4 in, Vibrations per Minute 12,500 vpm, Brushless Motor Yes, Cordless Tool Kit Contents (1) Bare Tool, Head Length 1 in, Tool Weight 8.7 lb, Shaft Connection Type Quick Connect, Battery Series M18 REDLITHIUM(TM), Charger Included No, Concrete Vibrator Type Handheld, Horsepower 1.8 hp, Number of Batteries Included 0, Power Source Cordless