The MBW ScreeDemon employs a simple, durable, low cost rubber isolator to drive the eccentric. The back-to-back triangular construction of the ScreeDemon bar is extremely rigid and minimizes variability in the transmission of vibration. The ScreeDemon simply clamps to the specially designed bar. The ScreeDemon's patented mount retention method enables use of low durometer isolators without loss of operator control. Hand/arm vibration is 50% to 90% lower than competitive screeds.