Assembling the Crossbar: Press the spring clip at the crossbar connector and insert it into the other end of the tube until the spring clip snaps into place (you’ll hear a “click” when it locks).
Attaching the Crossbar to the Uprights: Align both ends of the assembled crossbar with the bolts at the top of the two tripods, then insert them and tighten the top nuts or knobs to secure them in place.
By vevor