Utilizing advanced technologies, our ProCoat® yellow coating has been specifically engineered to withstand prolonged exposure to common household cleaning, plumbing repair and masonry chemicals, as well as the effects of harsh environmental influences such as salt and UV rays. ProCoat gas connectors are available in a variety of configurations. BrassCraft® ProCoat® Gas Connector, Series: CSSC, 1/2 in Nominal Size, FNPT Straight, 5/8 in Outside Dia, 48 in Length, 304L Stainless Steel, Polymer Blend Coated, Domestic