The violin Serra Onix gold tensor is specially designed for strings Wittner that ends with ball. All sizes available.
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Measurements : Diameter 7 mm,Height 3.5 mm,Total Length 19,5 mm
Mineral Onyx : It has a hardness of 7 on the Mohs scale. It is a variety of agate formed by concentric layers of different colors that give the stone a pearly appearance. It is appropriate for polishing. It has been used to make cameos, especially in antiquity, and also for glasses and goblets. It is considered as a semiprecious stone.
It provides peace of mind. It is attributed with aphrodisiacal powers.
Affinity with the sign of the Zodiac: Aries, Taurus and Sagittarius
Important: Only compatible with Wittner ® string adjusters.