2 x 1 1/2 Aluminum Coupler x Male Iron Pipe - Type BThe 2 inch x 1 1 2 inch Aluminum Coupler x Male Iron Pipe (Type B) is a hybrid pipe fitting designed to connect aluminum piping to threaded iron piping. One end features a 2 inch aluminum coupler, while the other has a 1 1 2 inch male iron pipe (MIP) thread, ensuring a secure, leak resistant joint between dissimilar materials. Constructed for strength, corrosion resistance, and ease of installation, this fitting is suitable for plumbing, irrigation,