What has a belt but never tightens?

Riddle Explanation:
The riddle, “What has a belt but never tightens?”, cleverly describes a conveyor. A conveyor belt continuously moves items from one place to another, but unlike a regular belt worn around the waist, it doesn’t tighten or loosen. This riddle plays on the dual meaning of “belt,” making it a fun and thought-provoking puzzle.