Review on ArtBin 9002AB Super Satchel Box - Portable Craft & Sewing Organizer with Thread Tray and Plastic Storage Case - Clear by Barbara Simmons

If you use 45mm rolls, don't expect this box to be very good for storing them. You can place them alternately, but the most annoying thing is that there is ONLY not enough space on the sides for them, so the result is a lot of empty space where you can't place them. The trays don't fit very snugly against the sides of the box, so it seems they *could* design it better to get the extra space, they just didn't care. As you can see from the picture it is definitely best for the smallest coils. All larger coils will need to be offset to fit. I'll keep looking for a better storage solution but may end up just making my own use as anything designed to store lots of small coils like this just doesn't work well for 45mm.