I have a blow molded table that has these pieces to hold the legs up and folded.  I couldn't see a manufacturer name on it, but whatever!

Check out that picture!  What a mess.  I originally printed that old fella some time ago.  Holy layer shift, Batman!  (I corrected that by tightening up the fasteners holding the hot end to the hot end trolly.  What a nightmare that was to track down.)