VAJRA
VAJRAs may have nine, five or three spokes. The spokes of a peaceful VAJRA meet at the tip whereas those of a wrathful vajra are slightly splayed at the end. When paired with a bell their length can vary from four finger-widths to twenty-eight finger widths.

In Buddhism VAJRA indicates the indestructible reality of buddhahood, which is defined as both imperishable and indivisible. The emblem symbolic of this indestructible reality is also known as VAJRA. This is a sceptre-like tantric ritual object which is held in the right palm when playing a ritual bell. The sceptre symbolizes skillful means and the bell, discriminative awareness. Holding these together in the two palms represents the perfect union of discriminative awareness and method/skillful means.
- A Handbook of Tibetan Culture

VAJRA body, speech and mind
Everything with concrete substance is called 'form', and all forms are the unity of appearance and emptiness: that is the VAJRA body. All sounds are resounding and yet empty: that is the VAJRA speech. When we recognize awareness, we realize that it is free from arising, dwelling and ceasing: this is the VAJRA mind.
- Tulku Urgyen Rinpoche (Vajra Speech)