I was looking for a small, rugged USB flash drive with about 16GB space and eyelet's Keychain! This I can recommend, he is high-quality, a fixed loop has indeed is a bit small, but in my opinion is not as fast to get broken and the drive is less than expected. This he is made of metal and the USBstecker as with all USB sticks between the contacts and which can not be "shell" a lot of space, I do not think the contacts by key or similar may be damaged, at least not by mistake!
For transmission speed I can not say anything because I have not tested it via software, but at least "Chill" he is no slower than standard sticks.
The eye I would have liked a bit bigger because I wanted to attach the drive to a small Karabienerhaken, which she was too small, but I've solved my key ring and this then hung on the hook.
Conclusion: For me the stick is ideal, I want to take enough space for all data, and so the and very well made.