●Use for T-REX 500E PRO / 500EFL PRO.
Must with:
500PRO軸傳尾管固定座組(H50116A)
145T M0.6 Autorotation Tail Drive Gear set(H50019A)

Specification:
●Front drive gear assembly x 1
(Φ4xΦ4.7x42mm) Modulus:0.6
●Front umbrella gear(25T) x 1(Φ18.5x8x25.4mm)
●Tail umbrella gear(25T) x 1(Φ18.5x6.5x11.8mm)
●pin x 1
●Weight:10.7g