dril-bu

The dril-bu, or Tibetan bell, is a ritual object used in Tibetan Buddhist ceremonies, particularly within the Vajrayana school. It is often employed in conjunction with the vajra (a ritual object symbolizing the male principle and fitness of action). The bell itself symbolizes the female principle and intelligence.12

In ritual use, the dril-bu is held in the left hand while the vajra is held in the right. Their interaction is believed to ultimately lead to enlightenment. The bell is shaken during prayers to attract benevolent spirits and to frighten away evil ones. It is considered a protective object, capable of warding off evil or demonic spirits.123