7 New Black Flocked. Display Tray Insert For Jewelry Showcases & Countertops 7 new 24 compartment black flocked tray insert. With this insert you are able to keep components findings or small jewelry pieces organized and visible. Easily remove the tray from the showcase to allow customers to view your jewelry from the countertop. Each compartment measures 2 1/8" x 1 5/8" (53 x 40 mm). The insert measures approximately 14 1/8" x 7 5/8" x 1/2" (35.8 cm x 19.2 cm x 12 mm).