Flexible rubber variable Cant- Finbox system?

does anybody know the name of the finbox system in the last year or two that was developing different durometer rubber inserts so that when inserted into the box the fins cant was flexible/variable? I remember seeing them on instagram but cannot find them now. Thanks for any leads.

Don’t think they’re flexible rubber, but ProBox fin systems uses inserts that the fin cant can be adjusted, and the fin moved fore and aft. 

Yeah im aware of probox. Not the ones im describing tho. The ones i saw were flexible and had a red,yellow and maybe blue insert all with different flex.

I dont know if these have even ever made it to market.

Sorry I can’t help with the original question.

That sounds terrible though…

Who would want fins with a less than solid base?

My experiences with that have only been negative

And—-   Where can one buy Probox??

Just buy a set of Pro-tek.   They make a ridged and a flex.   That is if they like Probox are still in Biz.

Pretty sure you can still get them from Larry Allison at Fibre Glas Fin Company