Hyperion 13t .5 MOD 3.17mm Shaft Size Japanese Steel Pinion Gear - Set Screw Type
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Forget running Brass Pinions that just wear out quickly. Get these High Quality Steel Pinion gears that will last a long time.
Highest quality, Japanese-made Steel Pinion Gears with Black Oxide Anti-rust Coating and Hardened 3mm Setscrew. Module 0.50. Suitable for many 400/450 class helicopters such as Trex450 series.
