When tall branches and shrubs are out of reach, add the HT-KM shaft extension to your KombiSystem attachment. This extender lengthens the shaft by 37". No more than one extension should be added. We service what we sell! Murdoch's operates regional service centers. Our technicians and transportation system ensure that your power equipment will be serviced and back in your hands in 2-4 weeks under typical circumstances, and sooner than that if at all possible. | STIHL HT-KM Kombi Shaft Extension