Mouthpieces FF Tensing ring

[SAXPA]

Hi all just wondering if any of you have tried the FF Tensing ring lig, seems a novel idea ,i don't know how long these have been about but i have only just seen them so any opinions would be welcome before the minor attack of gas tkes hold...
Cheers
PS_its currently on sale at sax.co

 

[jazzdoh]

These have been about a long time,i had one about 10 years ago,didn't work that well as far as it was difficult to keep the lig in one place,it just didn't hold the reed very well but they might have improved the design since i had mine.