I am trying to model a circular ring with (6) 3/8" holes. I need the ring to have Inside Diameters of 5,4,3,2 inches. I need to be able to switch through them quickly in the assembly. My boss doesn't have a specific dimension on what he wants so thats why I am asking how to give him those options of have those multiple dimensions. The way you see it now is I.D. = 5" & O.D. 6". I need for the set screws to stay in place as the diameters shrink. I tried doing this with different configurations but it wouldn't work, unless I did something wrong. Any advice?