Bosch / triton bucket hose connector

This is a vacuum hose adaptor to connect a bosch shopvac hose (easyvac 3 in my case) to a triton dust collector DCA300.
This dust collector comes with 2 hoses with a diameter of 40mm and none of the few connectors fitted my tools nor my shopvac.

collector side: 33mm
vac side: 36.5mm (to compensate filament dilatation).