A prayer wheel is a cylindrical device used in various spiritual traditions, particularly in Buddhism. It is typically made of metal, wood, or stone and is inscribed with mantras or prayers. When the wheel is spun, it is believed that the prayers within are sent out into the universe, promoting peace and compassion. Prayer wheels come in different sizes and can be found in temples, monasteries, and homes. They are often used during meditation or as part of daily rituals. The act of spinning the wheel is thought to generate positive karma and enhance spiritual practice for the individual.