This is a double Dorje symbol made into a keychain from sandalwood.
Dorje, also known as Dorji is a Tibetan symbol of cosmic energy, the basis of all we can experience with the senses. Dorje in Tibetan means ‘indestructible.’ The Dorje is the Tibetan Buddhist equivalent of the double terminated Hindu ritual tool known as the Vajra, or thunderbolt. It represents masculine force, sudden inspiration, the ‘cutting’ of ignorance and illusion.
Carry the Tibetan Sandalwood Double Dorje symbol with you all the time for good luck and protection from evils.