Hard Man Outfitters Thick Shaft Rings
Hard Man Outfitters has some unique shaft rings available in much thicker size than you may be used to. These thicker rings offer the boon of a reduced pressure point when erect and a bit more visual interest thanks to the wider ring.
These are easily some of the best shaft rings available - I have a few for swapping into other adornments such as a strap/shaft combo and also keep an available 8mm and 10mm size depending on how the mood strikes me.