HobbyKing™ Hardened Steel Pinion gears are the last pinion gears you will ever need to purchase. The Pinion gears are machined from a special steel alloy and are hardened for ultimate strength and durability. During the manufacturing process, extremely tight tolerances are maintained so the pitch of the gear is precise. This means Hobbyking™ Pinion gears run very quietly and efficiently.
As Brass or Aluminum gears wear, the interface between the pinion and spur gears degrade. The hardened Pinions are so tough that you can eliminate the need for spare gears in your toolbox. The Pinion gears are also strong enough to survive any insane power system that you choose to fit in your 3D helicopter.
Tooth Count: 18
Fits Shaft Size: 5mm
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