2 PCS - Bathroom Sink Basin Chrome Trim Overflow Cover Good adhesion , uniform color, excellent corrosion resistance with chrome plated Fit for all types of ceramic sinks on the market Made from tough high quality plastic ABS that grips better than metal and won't scratch the basin Simply pushes in and clicks in to place, no tools are required Ideal for home,hotel and other places usage Made the sink look fine again. The ring OD is nominally 3/4" or 2 cm- Don't be afraid to push to seat.