LANGPAI Brass Pop Up Drain With Overflow Push Down Flip Style Stopper Chrome Finish Durable solid-brass construction;expertly crafted. Multi-layer finish treatment. Top of drain size 2 3/8"(diameter),threaded size 1 2/5"(diameter),waste pipe size 1 1/4"(diameter).? Smooth push-button operation water-tight seal. Easy to install; Instructions, hardware & US-standard fittings included.