Copper sinks use specific types of drains that often cannot be easily sourced at a local building supply store. In addition, most people who buy a copper sink are looking for a drain that will blend in with the color of the sink, or match the faucet that is going to be used with the sink. Since the majority of sinks have a brown color tone, we only offer brown and copper colored sink drains such as oil rubbed bronze, rustic bronze and antique copper drains. Copper sinks usually do not have overflows, which means than you need a non overflow drain to work with most copper sinks. Most of the drains we offer for our sinks are non overflow drains to ensure compatibility.