Tube / pipe cap

First design, not printed yet ...

This is something I have in mind since a long time.
My wife is hanging a jacket on a metal pipe in the dressing room.Every time I am taking a suit, my wife's jacket falls off... Embaracing....
I hope this cap should block the jacket and therefor simplify my life.

June 18th 2019
First print was a failure: not strong enough.
went through 4 versions before being satified.
Only the version 4 is working correctly.
Should not use the v1