Low buck 360 build
Maybe this pic is a bit clearer. Ring in upper position was installed in the top groove and has no bevel. The ring with the bevel is on the bottom, the bevel is on the inside edge. This is showing opposite the side marked "top".
Here's a pic showing how they were installed when I received the items.
When I first got these I saw this and thought it was incorrectly installed but I wonder, because all 8 were like this so it's like the guy was following instructions.