These phurbas are made of solid brass and measure 9.5 inches long. This instrument is one of protection, and the Dalai Llama himself carries one with him at all times. If used consciously and with light, it is able to harness denser energies, and in ritual you may then return these energies to the Mother Earth to be purified and recycled. This may be done symbolically in prayer or in ritual activities. It is a powerful healing tool as well and is constantly recharged by the Earth when used properly. I store mine in a pot of soil and when I need to clear discordant energies in a space or in the yard, I charge it in the window box after proper ceremony.