Looks like it is good quality product. Bought for a Christmas gift.
I have mags stacked up on a shelf and they keep falling. These do a great job of organizing mags together and freeing up shelf space. They will work for 1911 or P220 mags if you squeeze the bars together. The first two 1911 mags have to be something with a wide base plate like a CMC 10 rd because you can't squeeze the bars of the holder together where they connect. Glock and P226 mags are held perfectly without issue. They are a bit pricey considering they are just coated wires bent into shape - but if you value a well organized gun safe, it's worth it.
The first mag fits really tight the rest fit like they are supposed too. I guess they were intended for smaller caliber mags than .45 acp.