10 The foundations were laid with large stones of good quality, some measuring ten cubitsa and some eight.b

Read 1 Kings 7:10 Using Other Translations

And the foundation was of costly stones, even great stones, stones of ten cubits, and stones of eight cubits.
The foundation was of costly stones, huge stones, stones of eight and ten cubits.
Some of the huge foundation stones were 15 feet long, and some were 12 feet long.