The aluminum frame features a magnetic surface, has undergone special treatment, and is resistant to acids and scratches. The rounded corners are made of plastic. Washable markers are used for writing, while a dry sponge is used for erasing. The product is delivered with 1 marker, 1 sponge, and 3 magnets. The mounting system uses sliding hooks. The disc-shaped base measures 40 cm in length and 4 cm in width, and is slippery. Frame width: 1.2 cm. Dimensions: 40x60 cm. Delivered covered with a protective film that must be removed before use.