i'm not sure if what i call them are what you do, so as silly if it sounds, a picture might help your cause. i am certain my interpretation is sold by at least two resin 3D guys, but am reluctant to invest the time looking through all of my links if i don't have something to compare.
in any event, to get the size you want, could a 3D be incrementally enlarge,d or are they only adjusted in BIG steps?