Exodus 39:4 Midrash

כְּתֵפֹ֥ת עָֽשׂוּ־ל֖וֹ חֹבְרֹ֑ת עַל־שְׁנֵ֥י קצוותו [קְצוֹתָ֖יו] חֻבָּֽר׃

They made shoulder-pieces for it, joined together; at the two ends was it joined together.

Read midrashic interpretation of Exodus 39:4: and classical rabbinic exegesis.