Premier Copper Products D-208ORB 1.5-Inch Non-Overflow Pop-Up Bathroom Sink Drain, Oil Rubbed Bronze Non-overflow push pop top down pipe width: 1.25-Inch Upper flange dimensions: 2-Inch, push pop with cap dimensions: 2.25-Inch, overall length: 8.625-Inch It can be installed by compression and is threaded with thread length of 2.75-Inch Drain size is 1.5-Inch It is made of brass