u/Earley21

Thanks! That makes sense. I'll check if anything at home has a rectangular rod it could fit. If anyone recognizes the exact product, please let me know.

My title describes the thing.

Additional details: - Size: about 3.5 cm tall - Material: black hard plastic - Origin: found at home in Japan, unused, looks like a replacement part - Age: unknown - No writing or markings on it - The round end has two small tabs, like it twists to lock into something. A small hole goes all the way through. Inside the rectangular part there are 4 small pins.

Searches I've done: - Google Lens on several photos, no match - "Amway Queen cookware lid knob", "Amway replacement parts", eSpring water purifier parts, Atmosphere air purifier parts, Fulton Street coffee machine parts. None matched.