Review on YENUO 450mm Extension Locking Capacity Inch by Damien Krzywicki

The sliding itself is decent, but of the two I got, a) the lock on one of them doesn't work. b) they sent two from the same party. These are locking bars so the locking mechanism must activate equally on both sides, but since two are being sent from the same side, one lock is activated by pushing the lever up and the other by depressing it. It is also evident that a locking lever is upside down.