'Stylus' in the Bible

Then Yahweh said to me, "Take yourself a large tablet and write on it with a common stylus pen: Maher-Halal-Hash-Baz.

How can you say, 'We [are] wise and the law of Yahweh [is] with us'? Look, surely {the lying stylus of the scribes} has made it a lie.

"The sin of Judah [is] written with an iron stylus, with a point of diamond [it is] engraved on the tablet of their heart, and on the horns of their altars.