Product review (5 stars): It's the little things that make your job just a little more pleasant.
I absolutely love these.  My dishwasher came with a huge silverware basket that took up the whole left side of the rack and didn't leave enough room for dishes and bowls etc.  I bought these so that I could have a little more flexibility with fitting dishes in.  I can use one half if I need a little extra room and they are small enough to move to various areas in the rack,  Normally I use both halves and put them in the corner of the rack one up front and the other perpendicular to it running down the side of the tray.  They hook on to the rack and stay in place.  I'm glad I found these.