This rack is for putting in inverted glass. It is made from high quality plastic. The board floor is made of special acrylic, which is of high durability, and is easy for cleaning. The shaft is made from polypropylene plastic, and is of high durability and flexibility. There are 56 slots; there are 2 types, one is attached to a wall, and other is co-used with a stand for portability. The size of the board is 55*65cm. The diameter of the shaft is 10mm. and 12cm. in length.