שמות, פרק ל״ט, פסוק י״ח

The garments of the High Priest required careful assembly to ensure the different pieces remained securely connected. To join the Breastpiece and the Ephod, chains were tied directly to special frames. These frames were then placed and firmly attached on top of the shoulder straps of the Ephod, specifically positioned on the front side [ביאור שטיינזלץ].