Micro-perforation: 2mm diameter holes. Allows water to pass through while catching bits of food and waste, unique beveled edge provides a secure fit; Scope of application: for sink drain hole with a diameter of more than 70mm (2.76 inch) and less than 112mm (4.4 inch); Meticulous processing, no burrs will not hurt your hands; Large kitchen sink strainers made of strong and durable stainless steel; Easy to wash with warm, soapy water to keep the mirror’s finish looking pristine over time. Dishwasher clean.