This adapter has not standard 9/32" central hole, I used 8/32" in CAD to fit my turntable (Pioneer PL-512X). When printed it is actually 9/32" anyway.
You can modify it in CAD (inner tube).
Beware! CAD and STL are 2X: print at 50% dimension.
Beware! print on flat face!
The author marked this model as their own original creation.