I've bought 3 of these shock mounts from Thomann.
I scoured the internet for a good suspension mount for my Neumann RSM191. This microphone has an over-all diameter of 30mm, so most shock-mounts will not accommodate my microphone.
It is very sturdy, the outer ring being of metal construction.
The bands are strong and the stand mount is of a good quality.
The mic clamp is advertised as opening to a diameter of 30mm.
This is the greatest width that the clamp can open to. A small countersunk bolt secures the clip to the shock-mount. I should point out that this bolt protruded slightly on all three of the units I bought. Care may need to be taken in order to make sure that it doesn't scratch the case of your microphone if it has a diameter as wide as mine.
Over-all, a very sturdy unit and definitely the best value shock-mount of this type that I have found available.