Instruction:
-Use for T-REX 450L/450 PRO.
-Brand new autorotation tail drive upgrade set efficiently reduces the tail rpm
while improving tail authority which allows for precise flying performance.

Specification:
-450 Autorotation tail drive gear 104T -Black x 1
-450 Autorotation tail drive gear bearing(Ø6xØ15x12mm) x 1
-450 Front drive gear assembly x 1
-450PRO Short umbrella gear (Ø3.2xØ13.8x9.7mm) x 1
-69 Tail Blade-Black x 2
-Gear Ratio 1:3.71