Double Horse 9101 Helicopter Spare Part Main blade A+ Main blade B+Connect Buckle + Upper blade grip + balance bar + Nose tail tube fixed connecting parts + inner shaft 9101-01/02/03/04/09/20 Double Horse 9101 Helicopter Spare Part Main blade A+ Main blade B+Connect Buckle + Upper blade grip + balance bar + Nose tail tube fixed connecting parts + inner shaft 9101-01/02/03/04/09/20