This Husqvarna Smart 40 Concrete Vibrator is a powerful system with an integrated, intelligent frequency converter developed for intense professional use. The electronic high frequency vibrator has an intelligent, integrated frequency converter that combines reliability and performance with top technology. Uses high centrifugal force, stable speed and high amplitude to ensure excellent concrete vibration with fewer dips. Includes Power unit, 1.58″ c 12.6″ Head & 16.4′ Shaft.