Portafilter Paper Espresso Filters (100 Count) – Good Brothers Coffee LLC.
Yin and Yan Ring 316L Stainless Steel Gold or Silver - Etsy
WorldAntique.net - Georg Jensen. Sterling Silver Ring #93 - Nanna Ditzel. Size 53mm
Amazon.com: JUN-STORE O-Rings CS3.53mm EPDM O Ring ID 151.99/158.34/164.69/171.39x3.53 mm O-Ring Gasket Seal Exhaust Mount Rubber Insulator Grommet 10PCS ORING SENMIAO-TH (Size : ID164.69x3.53mm) : Industrial & Scientific
53mm Coffee Distributor & Tamper – Evergreen Coffee Co