Instruction:
-Use for T-REX 600PRO/600EFL PRO/550E/550X
-Utilizes newly developed, highest spec and superior anti-wear material to increase the overall strength
and durability for torque tube drive gear. Effectively minimize gear striping and crash damage.
-Must with Autorotation Tail Drive Gear Set(H60198QA)

Specification:
-600 Front drive gear assembly x 1
-600 Short umbrella gear x 1
-600 Long umbrella gear x 1