A Buddhist Prayer Wheel is a hollow cylinder with the mantra "Om Mani Padme Hum" embossed on the wheel. It is believed that spinning a prayer wheel is as effective as reciting sacred text aloud. The idea of spinning mantras originated from various Tantric practices where the mantras are visualized revolving around the nadis and meridian charkas such as brain and heart. The wheel is spun clockwise with compassion and devotion. Inside the prayer wheel there is a scroll with the same mantra repeated many times. The prayer wheel measures 7 inches tall, 7 inches wide and 4 inches deep. Free shipping.