They are the ritual object usually made of bronze or iron, vary in size. ‘Dorji’ or Vajra have three, five or nine spokes that usually close at each end in a lotus shape. The ‘Dorji’ is said to measure twelve units in length, as it eliminates the twelve interconnected links in the chain of dependent origination. It is the quintessential symbol of the indestructible path of “diamond Vehicle” of Vajrayana Buddhism, appearing in both its name and as the appellation of a host of Vajra – named divinities, attributes, and qualities.

‘Dril Bu’ or the ritual hand-bell represents the feminine principle of the “Perfection of Wisdom”, which directly realize emptiness. When the bell is rung it is said to “proclaim the sound of emptiness.” The bell is known as Vajra- Ghanta. It is always held in the left “wisdom” hand of the deity or the practitioner, and is commonly paired with a masculine Vajra, which is held in the right “method” hand.

During rituals, the ‘Dorji’ is used together with a ‘Dril Bu’. Together they symbolize the perfect union of wisdom or emptiness.