Bought 3 and all tested good. Absolute bargain and cheapest postage of any big online puter part retailer with the same postage cost for 3 units as for 1.
The cover for the plug is captive and slides back over the body so there's no stupid little cap to lose.
Actually 57GB (in proper '2^30 bytes' gigabytes) but that's par for the course for storage media this century. In a USB 3.0 socket it reads at 90MB/s and writes at 30MB/s, slowing to ~9MB/s once the cache is full. Slightly slower in a USB 2.0 socket. Acceptable performance for a budget USB stick.
Big enough to create installation media or store a 4K video if it's short enough (around 1.75 hours, depending on bitrate) but costs about the same as a supermarket frozen pizza.