This Cable Holder for Zip Ties can be modified by using Variables inside OnShape.
Link to Onshape File:
https://cad.onshape.com/documents/c44aae375394e49dfd86d4de/w/0e81b6d19bd5875dd172d030/e/b0d5f326709330aa5b4dfb41
You can create your own Version.