... are free, one can put into another, thus save much storage places.Packing color box with foam. 4pcs/sets CTN size ... :1 set.wooden cube display,wood cube shelf,bookcase,CD cabinet, CD storage,Wall cd rack,wall shelves. display cubes. used as home furnitureswooden ... MDF or particle board, can be used as wall fixture, cd racks, book shelf, flower support, ect. Made in E2 material ...