The clamp is perfect for the series of box protectors for the s20 ultra. It fits perfectly and fixes the phone very well. Especially when I cycle to work (approx. 40 km). The only thing I don't like is that the lock itself (tongue) feels a bit tight. This actually resulted in picking the lock on the phone's case (the plastic groove) but I turned the phone over and all is fine. For the money it doesn't get any better than having two backups. Everything is worth it. They are just as durable if not more durable than OEM.
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