These are a direct replacement for the Alias. Perfect press in fit and economical. More expensive bearings are available, but not really necessary in this application. Smoother operation can be obtained probably by balancing the props and shafts, instead of spending 3 or 4 times the money on class 5 or 7 bearings, which would probably be more susceptible to dirt and debris due to their closer tolerances.
Verified purchase: Yes | Condition: New
Received bearings quickly. Installed in my Hubsan H502E. Worked great runs much smother and quieter. Great product.
Verified purchase: Yes | Condition: New
Purchased these to replace bushings and my I of God quad copter. Runs much smoother with less vibration. Haven't had long enough to see how durable they are.
Verified purchase: Yes | Condition: New
Used it for my drone propellers and they work perfect since it had no bearings on the propellers before.now it is smooth.
Verified purchase: Yes | Condition: New
Great ball bearings. Used to replace plastic bearings on a Hubsan X4 Desire
Verified purchase: Yes | Condition: New
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