This is brand new and unused in it's original packet - complete with two screws. It came supplied as a spare with our Montana San Remo III bird cage. We no longer have the cage and found this when tidying up.

The internal diameter is approximately 9.5cm, the screws have a thread of approximately 0.5cm and the distance between the centre of each screw is approximately 10cm.

It would definitely be suitable for the Montana San Remo III bird cage but more than likely is compatible with other Montana bird cages that use this size of feeding dish/water bowl and accept that size of screw.

It has an antique/antik finish which is a sort of 'hammered metal' effect which would have matched to our original cage.