[PERFECT COMPACITILITY DESINGN] Our sink drain filter is designed with a new small diameter (1.1~1.5 inch inner diameter), our 2 silicone rings ensure a perfect fit with various drain holes, conforming to most US standards 1 1 /4âł ~1 1/2âł sink drain holes (depth: about 1.5âł) [ANTI-CLOGGING BASKET INSIDE] Unlike ordinary button drain plugs, Upgraded pop-up sink drain plug has an anti-clogging basket inside that collects hairs and prevents the drain from clogging and your ring will never enter the sewer again.