וְֽהָיְתָ֞ה הַפְּצִ֣ירָה פִ֗ים לַמַּֽחֲרֵשֹׁת֙ וְלָ֣אֵתִ֔ים וְלִשְׁלֹ֥שׁ קִלְּשׁ֖וֹן וּלְהַקַּרְדֻּמִּ֑ים וּלְהַצִּ֖יב הַדָּרְבָֽן׃
And the price of the filing was ba pim for the mattocks, and for the coulters, and for the forks with three teeth, and for the axes; and to set the goads.
Read Jewish philosophical commentary on I Samuel 13:21: and classical philosophical sources.