Customized version of https://www.thingiverse.com/thing:3204763

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=3204763

Using the following options:

cable_diameter = 10
hole_diameter = 14
hole_depth = 15
shoulder_diameter = 20
shoulder_thickness = 2
cone_thickness = 1
cone_angle = 20
flex_thickness = 1
$fn = 64.0