Berean Study Bible
coupled together from bottom to top and fitted into a single ring. He made both corners in this way.

King James Bible
And they were coupled beneath, and coupled together at the head thereof, to one ring: thus he did to both of them in both the corners.

American Standard Version
And they were double beneath; and in like manner they were entire unto the top thereof unto one ring: thus he did to both of them in the two corners.

Darby Bible Translation
and they were joined beneath, and were coupled together at the top thereof into one ring: thus he did to both of them in both the corners;

Douay-Rheims Bible
Which were also joined from beneath unto the top, and went together into one joint. Thus he did on both sides at the corners:

English Revised Version
And they were double beneath, and in like manner they were entire unto the top thereof unto one ring: thus he did to both of them in the two corners.

Young's Literal Translation
and they have been twins below, and together they are twins at its head, at the one ring; so he hath done to both of them at the two corners;