Rainwater Diverter Kit, fits 68mm round and 65mm square downpipe (black)

Ideal for filling a garden Water Butt from a rainwater-gutter down-pipe close by, eg from the house garden room/cabin shed or greenhouse. Incorporates an overflow feature so that, when Water Butt is full up to the water entry point in the side close to the top, excess water will then flow into the lower part of the guttering down-pipe and into any installed drain.

eBay