I am building a double conversion k10 with a C+C back that also has a disk conversion. I was really hesitant to buy them. The last thing I need is a wheel off the truck I just built. But I didn't want to spend 600+ on spacers. This allows the twin wheels to clean the inside well when the bed and rim clean the calipers. I have no regrets after installing it. They look and feel well made. Everything is perfectly matched. No complaints.