The 25mm Barbed reducer fits onto 25mm internal diameter pipe and will convert the internal diameter of the pipe to 13mm.

This adapter fits our 25mm (internal diameter) 32mm (external diameter) outlet tubing

This adapter can be used to connect a standard hosepipe to the Rainwater Terrace water butt outlet tubing to take the overflow to a tree, hedge or area of a garden that requires additional watering.

This listing is for the connector only. Tubing an be purchase separately.