The 1-1/4 Coupling (Socket) Copper X Copper With Stopis a straight pipe fitting used to connect two copper pipes. It is designed for sweat (soldered) connections, ensuring a strong, leak-free bond. The rolled-up tube stop helps position the pipes properly inside the fitting for a secure and even solder joint. Its precise alignment feature, strong soldered connection, and corrosion resistance make it an essential component for leak-proof and long-lasting installations.