1" to 1/2" reducer for overflow vent

Lidl collapsible rain barrel has a 1" overflow valve, needed a reducer to 1/2" so the excess water is disposed elsewhere.

The reducer's thicker part has an inside diameter of 1" and the thinner part a ½" outside diameter. Both have small ridges to grab better. The thicker part fits on Lidl's collapsible rain barrel without fasteners for the pipe some fastener recommended (I had a non-standard pipe on the picture)

Printed with TPU - other filaments would be too brittle for this application (PETG could probably work, but would fit only with heating).