Doesn't Need, Want Or Know

Riddle: The manufacturer doesn't need it, the buyer doesn't want it, and the user doesn't know that he's using it. What is it?

Answer: A coffin.

Source: https://www.riddles.com/index.php/5530

The manufacturer doesn't need it, the buyer doesn't want it, and the user doesn't know that he's using it. What is it? — Doesn't Need, want or know by Danni v1.

Riddle: The manufacturer doesn't need it, the buyer doesn't want it, and the user doesn't know that he's using it. What is it? Answer: A coffin. — by Danni v2.