Truck bed D-ring
 

Hello
I am hoping to find some suggestions about my issue.
I am using lots of tie downs and my original D-Ring is too small to fit all hooks, thus I am looking for either extension or some kind of carbine ring, larger in diameter, so I can easily attach 5-6 ratchet tie down hooks (right now the limit is 3). I looked all over, but no luck so far, not even some crappy carbine or extender for this purpose specifically.
I hope someone might suggest something, anything goes.

Appreciate in advance for any suggestions provided.