Digital Camera T Step Ring - 55mm Threading - TelescopeAdapters
Jumbo Chrome Wedding Band/Ring - Flat 55mm
NiSi PRO 52-55mm Aluminum Step-Up Ring | NiSi Optics USA
Stainless Steel 316 Round Ring Welded 6mm x 55mm (1/4" x 2") Marine Grade - US Stainless
O-Ring 71x3.55mm NBR 70 - LagerKoning.nl
8mm x 55mm Stainless Steel Round Ring - Cavanagh Nets
Step Up Ring - 55mm-72mm
Amazon.com : (2 Pcs) 55-58MM Step-Up Ring Adapter, 55mm to 58mm Step Up Filter Ring, 55mm Male 58mm Female Stepping Up Ring for DSLR Camera Lens and ND UV CPL Infrared Filters :
O-ring 5 x 55mm 70 shore
55 mm x 2 mm O-Ring | MayDay Seals Material Nitrile 70
55mm Ring for Edition 4 Molded Resin Chastity Cage – CB Store