What are they? They are kind of like the image 3 piece but not. The reverse lip (bead on the back makes the front clean but I guess reduces caliper clearance... I've always wondered if they actually hold the tire as well as I only see that design on what I'd call bling wheels vs race wheels??.....but that could just be the caliper clearance thing and 308 brakes don't exactly have wheel clearance issues since they were designed for the original 14" wheels I guess.