I just started Diamond Painting and wanted this set to make it easier to do. It has extra holders for your and even ones that hold more than just one diamond sequin to make it easier and quicker to do. It also has extra clay (wax pad) which helps the diamonds to stick to the painting. You get three different sizes of sorting trays, tweezers and a storage box. What i really loved was the stickers to put on the storage box. With each painting they put numbers on the painting so you know what color of diamond to put on each spot. You put the numbers on the storage box to keep them separated so you can easily find the ones you need after sorting them in the tray. Really great set!