This 1" Steel Concrete Vibrator Head from Oztec Industries produces the highest amplitude and centrifugal force, generating the largest radius of influence of any heads available. Whether combined with one of Oztec's electric or gasoline powered motors and choice of flexible shafts, the results are exceptional. Energy is efficiently transferred from the motor, via the shaft, to the head, which is all eccentric (vibrating the entire head). Superior consolidation, increased productivity and a process more forgiving of less than perfect vibrating techniques.