【Unopened】JF-21 Compatible Water Filter Cartridge 1pc (For Kitchen Faucet) This is a JF-21 compatible water filter cartridge that became unnecessary due to the replacement of my kitchen faucet. I purchased it on Rakuten Ichiba for 2,000 yen per piece, but it has been stored unused. - Unused and unopened - Compatible with JF-21 type (compatible product) - Scheduled for anonymous shipping via Yu-packet (with tracking) ※ Please be aware that this is a compatible product, not a genuine product. ※ Please check the compatible models in advance. How about it for a trial or spare? I will pack it carefully and ship it.