FITS STANDARD SINK DRAIN: The size of the sink drain strainer is 3.15 inch which can fit for most American standard 3-1/2 inch kitchen sink drains, universal size for opening of about 3.2"- 4" EASY TO INSTALL AND OPERATE: The copper sink strainer only fit those sink drains with a narrow rectangular hole in the center. Please check the second picture for figuring out which sink drain is compatible with this strainer DURABLE AND RUSTPROOF: The antique copper sink stopper and strainer is made of durable stainless steel construction which is built to last! Except for the metal center knob and rubber drain stopper. A stylish look is suitable for your kitchen STRAINER/STOPPER: It can works as a kitchen drain strainer and a kitchen sink stopper, depending on which way you want. The bronze sink strainer basket is super easy to clean! Just remove the basket to empty. ANTI CLOGGING SINK STRAINER: Traps food debris to prevent clogs in your sink and has 32 bar holes on the basket for draining water easily and fast. Please feel free to contact with us at any time if you have any question about KONE sink drain strainer