The copper sheet gauge on this copper bowl is thick: is gauge 14 (0.0641"") making it a very heavy piece. This bathroom copper vessel has a standard 1.5"" diameter hole and it does not have an overflow system. It is intended to be mounted above the counter. It has a ""wired edge"", which basically is the copper sheet coiled around the wire. The result is a beautiful bowl, that when seen from above if shows a thick copper edge, giving a strong body to the sink! The finish is dark brown, weathered copper. It will definitely add a unique accent to your bathroom.