Only the mechanism to click together is not mature 100%. Man has relatively accurate so Aim click together. Plotting the box beside him, one has sometimes afraid to come on the red Unlock button on the side. One can easily carry the boxes turned 90 ° when you're in this thought but could quickly lead to a sore foot or the like.
Each of a carrying case system wants to buy or already an L-Boxx was recommending I continued this system. I would / will the L-Boxx buy again.
A Sortierboxeinlage that allows a division in the middle, would also be desirable, ie tool insert + sorting box, but does not play here in the review here. Should anyone know of, please leave a comment there.