About this 3D model

My favorite table game is Total Soccer FIFA, a game that is played on a carpet field with a ball, players and two goals. The two goals are foldable in order to keep everything in flat box. I had to stop playing because the goals broke. I'm sure everybody that have the game have the same problem, because the attachment system is very weak. Taking advantage of #FIXMYTOY I create a new system designed with Fusion 360, very easy to print (time, material and not supports). The object printed is pipe with the diameter of the stick. I made it with two openings in the two sides to ensure a good grip.