Original Design from: https://www.thingiverse.com/schmidi80
Original Design: https://www.thingiverse.com/thing:4421324

The Thread does not fit my Intex pool threads, however the adapter has otherwise fit.
So i changed the Thread of the Design to Fit my Intex pool threads from Europe.
It seems there are possible two Versions available from Intex, or there is a difference between US and Europe..

Original Text from Schmidi80:

This is my Bayonet Connection for an Intex Pool Vacuum Adapter.
I use it for fast switching the connection between the Pool skimmer and the vacuum cleaner.
The bayonet Connector is for 32mm or 40mm hose.

If the Hose Adapter does not fit exactly in the Input Adapter, you can reduce the base
of the Hose Adapter a little bit with Sandpaper

Special thanks to Henrik Sozzi who inspired me for this design and for the base of the
input adapter.
https://www.thingiverse.com/thing:2430487