Lasco 10-2763 Water Supply Flex Braided Vinyl 1/2-Inch Female Compression X Female Ballcock Plastic Nut X 12-Inch. 1/2-Inch compression x ballcock x 12-Inch . Braided vinyl supply. Use to connect most toilets to water source. Lead free product. meets California AB-1953. Vermont. and new federal standards for low lead applications. Uniform Plumbing Code (UPC) certified and approved - Industry standard ensuring product quality and safety.