Culina Sink Strainer - 4.5" dia. Stainless Steel Micro-perforation: 2mm dia holes. Efficient anti-clogging shield lets liquid flow seamlessly into the drain while it blocks food particles. Stainless steel construction for reliable, rust-free service. Suited to daily utilitarian use for long-lasting protection against clogging. 4.5" overall dia. includes 3" micro-perforated bowl area contoured by a 2-ply metal sheet flat rim to rest over sink's drain. Easy wash with warm soapy water to keep the mirror finish shine impeccable over time. Dishwasher safe. 100% Culina Satisfaction Guarantee