TubeNet

Has anyone seen this before??

http://www.meinlweston.com/quality-inst ... ho-kim-379" target="_blank

the only instance I found had no response... I am guessing it is some sort of weight ring? Anyone know anything about it? Not looking to buy one, just curious....

(obvious apologies if repost...)

edit - found it... it's made by Romera.

Doesn't appear on their site- might be out of production.