I've been building e-bikes from kits like this for many years. Quality is part of the course, I love that there are two sensor packs for some sort of failover. I would say the design/build quality is a bit above average, the build is terrible which is pretty standard. Second, this isn't a screw, they saved some parts that usually come with a kit like this. Namely, you need to buy tape for the inside of the wheel (to prevent the tire from sticking out through the holes and popping), as well as a gear cassette. It's a bolt-on gear cassette, so I couldn't transfer anything in my case, for example. It has disc brake mounts but does not come with a disc.
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