This is a great replacement for the 500 class helicopter.
500 Class Metal Tail Holder & Rotor Assembly (Torque Tube Version)
500 Class Metal Wash-out Base
Hirobo Sceadu Upgraded Metal Washout Unit
Align TRex 250 Metal Washout Control Arm H25011T-00 for RC Model Helicopters
JP Helicopter Twister Storm CNC Metal Washout Arms Option 6600528new in the pack
500 Class DFC Main Rotor Head Assembly