This is a great way to keep your markers neat and tidy. It's also pretty flexible. It can store things for you other than markers like pens and pencils, really anything you see fit. I ordered 3 sets. One of the sets had a deformed tray, but that didn't interfere with stacking. I've heard from other reviews that it comes off easily on impact, just strategically place it where it doesn't need to be hit. I haven't had a single incident that proved its fragility. I even moved 18 trays stacked together with my copies inside from the basement to the 2nd floor and it didn't come loose. I say connectors do the job fine plus gravity. Update April 21, 2016 I cannot stress enough how much I love this product. I've bought it twice more since I wrote the original review. I just LOVE that each of my markers have their place. I will continue to purchase this product as my collection grows.
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