Absolute no-go!

I have originally bought this adapter as a connection of 3.5 headset jack to 6.3 jack guitar amp.
The visual impression is ok, but he is mistaken. The build quality is poor to bad. The reason for this assertion is as follows:
I wanted to play, as the snap ring me - and only the locking ring - fell into the hands. At first I thought to myself, "Go on, it stuck and on we go." Far from it! Without the ring, the 3.5 jack does not have to poor maintenance and from stereo to mono. Not even knock with sachtem it the ring goes back inside. Incidentally, the portion was about 15 hours, "in operation", after it has given up the ghost. The fact is that the product I was very disappointed and I'm glad that it was only a few euros.