Round Sink Overflow Cover with Hole, Durable Basin Overflow Ring, Kitchen and Ba

A/B/C size: about 30.6 14.3mm Applicable aperture: 22-24mm. Applicable aperture Hollow ring E: 30.6 14.3 25.1mm. F Double ring: 35.4 19.1 30.5mm. G Round oval: 51.5 14.8 48.4mm.

eBay