Very good adapter! For backup on a mobile phone, it's just fine! However, for charging, it is very slow! But other than that, it's just fine!

One of the 3 that I bought, with little use, broke (USB-C Male to USB-A Female to connect a USB-A dongle for keyboard to a laptop that only has USB-C).

Update 8/Sep/2024
Keep in mind that if you want to transfer at USB 3.0, 3.1, 3.2 speeds to USB-A sticks that have high write speeds, this will not suffice.

After testing, it was found that it limits the write and read speeds to 25MBytes/s on a stick that had 30MBytes/s Write / 300 MBytes/s Read (Samsung FIT USB-A 64Gb memory stick).
With D-Link USB Hub, with Dell USB-C Male > USB-A Female, the speeds are nearly achieved at max. (The Dell https://www.skroutz.gr/s/19989822/Dell-USB-C-male-USB-A-female-5RMND.html is USB v3.0)

For other tasks like charging, etc., it is OK

It does not connect to the phone if you have a case. The case needs to be removed in order to connect it. This happens because the black plastic is square and does not have a cut like other USBs. If I knew this, I would not have bought it.

For data transfer, it is somewhat tolerable. However, for charging, it is completely unsuitable. We are talking about 4-5% charge per hour. To fully charge your mobile, you need about 12 hours.