Use for T-REX 550/600.
Brand new design for 600 Feathering Shaft, both ends of shaft increased thickness from 6mm to 8mm, so its whole external diameter is equal in 8mm thick, which can effectively enhance strength of main rotor system. In addition, adopted M2.5x6mm screws also redouble its intensity to meet its upgrade strength.

* Feathering shaft x 1
* Washer x 2(5x12x1mm)
* Spindle bearing spacer x 2(10x13.8x0.4mm)
* Socket screw-black x 2(M5x10mm)
* F8-14M Thrust Bearing x 2(8x14x4.5mm)