Yellow Double Horse 9101 RC Helicopter Quick Wear Spare Parts Set(balance bar/connect buckle/main blade grip set/bottom fan clip/inner shaft/Tail Rotor/Main Blades Set) Yellow Double Horse 9101 Replacement Parts Set. This Set comes with : 1 balance bar 9101-01 2 connect buckles 9101-02/ 1 main blade grip set 9101-03 1 main rotor blade A B(4pcs) 9101-04 1 inner shaft 9101-09,1 bottom fan clip 9101-11, 1 Tail Rotor