This is a Tibetan Buddhist prayer wheel. It is made from copper and you can mount it on the wall. Prayer wheels were first invented because many in Tibet could not read, and this was a way to get their prayers out even though they could not read them out. It is said that for every rotation of the wheel you can chant Om Mani Padme Hung. The size of the prayer wheel is 9 x 4 x 3 inches.