Instruction:
-Use for T-REX 450 Series.
-Must with::H45157 Motor Pinion Helical Gear 12T.
-New style high strength 121 tooth Mod 0.6 helical main hear for 450 size helis. The increase gear pitch can withstand higher power, at the same time minimize operational noise. A great upgrade to withstand the modern high power system.
-Utilizes high strength polymer plastic with excellent rigidity and flexibility characteristics.
-Patented unique built in fan design to create induced air flow, effectively cooling electronics and motor.
-Gear ratio 1:10.08.

Specification:
-CNC M0.6 Slant Thread Main drive gear(121T) x 3
-Weight:35.3g