This magical Circle Ohm Keychain is hand cast and hand finished in solid Pewter with a shiny finish resembling antiqued silver. We use Fine American pewter that is lead free and Made in the USA. Our Pewter Keychains make terrific gifts for family, friends, business associates and of course, yourself. We hope you and your loved ones enjoy this keepsake for years to come! A little History about the Aum or Om: Aum or Om is the most important Hindu symbol. This symbol is actually a sacred syllable representing the Brahman or the Absolute ~ the source of all existence. Brahman, in itself, is incomprehensible so a symbol becomes mandatory to help us realize the Unknowable. It is made up of three Sanskrit letters, aa, au and ma which, when combined, make the sound Aum or Om and is also called pranava, to mean that it pervades life and runs through our prana or breath.