Sink Strainer Basket, 1 Set, Ø 3.15", Compatible with IKEA Siphon ATLANT and DOMSJÖ, Strainer Basket with Improved Rubber Seal Gasket, Spare Part for Atlant Sink and Domsjö Sink, Drain Plug Strainer -
Seal for IKEA Atlant Sink Plug Rubber Seal - Etsy
IKEA Atlant Sink Strainer 900.560.21 for sale online | eBay