This metal sample is the exact same material that your sink and metal accessories will be made of. We use the highest-quality domestic brass on the market. Our brass is cold-rolled and much harder than what is used for most imported sinks. We highly encourage selecting to have us naturally burnish the inside of your sink. This will result in much lower maintenance, similar to our weathered copper sinks. You may choose to have it left unlacquered, which will patina on its own over time. Please call to discuss before ordering! Exact sample sizes may vary.