Fast delivery. Cheap motors. But they do a great job. I even use these with 4s. No problem.
Attention SCAM: I didn't receive my package like other Customers before and it seems like that I don't get my money back. The support is a liar. They claimed i get it back but still no money. Never had such an experience before on Aliexpress & never gave a bad score. Do yourself a favour and don't buy.