The Kenney Rust-Proof Bathtub and Shower Drain Cover helps prevent clogged drains and damage to your pipes by catching hair and other debris before it goes down your drain. This drain cover is designed to have smaller holes to let the water down your drain and keep out debris. A non-skid rim helps to keep the cover in place during use. It can also be used as a drain cover for kitchen sinks and industrial sinks. The Kenney Rust-Proof Bathtub and Shower Drain Cover measures 4.7 inches in diameter.