Brass: Articles Made of Fetters
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Judges 16:21
Then the Philistines seized him, gouged out his eyes, and brought him down to Gaza, where he was bound with bronze shackles and forced to grind grain in the prison.
2 Kings 25:7
And they slaughtered the sons of Zedekiah before his eyes. Then they put out his eyes, bound him with bronze shackles, and took him to Babylon.