Cordless Concrete Vibrator Voltage 18V DC Shaft Length 8 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 12 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