This fitting is used to connect 65mm square downpipe to 68mm round downpipe.It is most commonly used when connecting round downpipes to a square gutter system.
FloPlast PVC Square to Cast Iron Half Round Gutter Adaptor - Brown
FloPlast PVC Square to Cast Iron Half Round Gutter Adaptor - White
FloPlast PVC Half Round to Cast Iron Half Round Gutter Adaptor - Brown
FloPlast PVC Half Round to Cast Iron Half Round Gutter Adaptor - White
FloPlast Square to Ogee Left Hand Gutter Adaptor - White
FloPlast Cast Iron Effect Square to Round Downpipe Adaptor