3pcs 42mm/47mm/48mm/51mm/65mm Dia Piston Rings Set For Air Compressor Pneumatic Parts Balance Rings
https://www.vogueparade.com/shopping/EN/42/1/1005003052221979/3pcs-42mm47mm48mm51mm65mm-dia-piston-rings-set-for-air-compressor-pneumatic-parts-balance-rings//