Bought the UTD/KUBI drysuit ring system.
Checkout and shipping was a breeze, was delivered promptly.
The only issue I have is that the options for the system, it only has sizes for the included dry gloves. Not the rings themselves.
When the packing/shipping list was emailed to me, it mentioned the smaller rings (80mm). I was a little concerned as my hands don't fit into a 80mm hole.
When they arrived, the packaging said 80mm. The ID of the smallest ring is 82mm, and it fits just fine.
The 10 rating is that these rings are hard to get in Canada (previously, people did a large shipment from KUBI directly), and this is an easy way to get them.