4 x 12 Aluminum NippleThe 4 x 12 Aluminum Nipple is a high quality, durable pipe fitting designed to connect two pipes or components, featuring a 4 inch diameter and a 12 inch length. Made from aluminum, this nipple ensures a lightweight yet strong connection, offering excellent corrosion resistance. It is ideal for applications that require a medium length, reliable, and secure pipe connection, particularly in systems exposed to moisture or other corrosive elements.