Household telephone line modular cable, 6-pin 2-core, 3m. I've moved frequently due to job transfers and used telephone lines that fit the layout of each residence, but this one doesn't fit my current home, so I'm selling it. This item has been stored at home for a long time. Operation has been confirmed. There are some stains and scratches, but it's still usable. Please understand that this is a used item. *Recycled materials may be used for packaging. Thank you for your understanding.