Basic low poly (16grams) desk grommet to fit inside a 60mm desk hole. Ideally suits desktops up to 16mm thick. Has a 52mm throat at the narrowest point. Easily fits 4x cables 7.2mm as you commonly find on 220v 10amp devices.
1h47m to print at 50mm/s 0.4mm nozzle 0.2mm resolution with a brim in PLA. Resolution really isn't important to print as low as your printer can go to save time.
58m to print at 0.28mm res and 80mm/s
The "V2" files fit together a little flusher and there is a wall around the opening on the cap and the brim of the insert is 2mm wider (just looks nicer).
Change line width to 0.47 to avoid zigzagging. This makes exactly 3 wall lines even on the taper. Cura should compensate flow rate to balance the change.