Jamieson, Fausset and Brown on 1 Kings 5:18

18. and the stone squarers--The Margin, which renders it "the Giblites" (Jos 13:5), has long been considered a preferable translation. This marginal translation also must yield to another which has lately been proposed, by a slight change in the Hebrew text, and which would be rendered thus: "Solomon's builders, and Hiram's builders, did hew them and bevel them" [Thenius]. These great bevelled or grooved stones, measuring some twenty, others thirty feet in length, and from five to six feet in breadth, are still seen in the substructures about the ancient site of the temple; and, in the judgment of the most competent observers, were those originally employed "to lay the foundation of the house."