Tehilim Book Keyring Judaica artisan sterling silver Tehilim (psalms) key chain. The key chain is made of a sterling silver case inscribed in Hebrew Sefer Tehylim (Book of Tehilim) and inside is a small Hebrew printed book of Tehilim / psalms. Psalms is known as a protective amulet in the Jewish religion. Many Jews carry the Psalms with them for good luck. It was made in the electroforming method. Measurements : Marks : Length: 5.2in. / 13.2cm. Width: 0.9in. / 2.28cm. 1 inch = 2.54cm 925 for Sterling Silver. Weight : 25.3gr. / 0.81oz.