A prayer wheel is a cylindrical wheel (Tibetan: འཁོར་ལོ།, Wylie: khor lo) on a spindle made from metal, wood, stone, leather or coarse cotton. Traditionally, a mantra is written in Tibetan language, on the outside of the wheel. The mantra Om mani padme hum is most commonly used, but other mantras may be used as well. According to the Tibetan Buddhist tradition based on the lineage texts regarding prayer wheels, spinning such a wheel will have much the same meritorious effect as orally reciting the prayers.