This is a standard 12 inch stainless steel braided supply line made by Arrowhead Brass. It can be found under the part number HS37C87B-12. This line can be used for almost any toilet. This supply line will come complete with the hex nut used to connect the line to the shutoff valve, and the nut to secure the line to the bottom of the fill valve. Each connection will have a small rubber gasket located on the inside of them. This gasket is used to prevent any leaks from the connecting ends of the supply line.