Serra cello tensor is a head of black onyx inlay tuner for string terminated ball. Cello 4/4 3/4
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Onyx - Inlaid Black head string adjuster for Cello 4/4 3/4 1/2 1/4 .
Measurements : Diameter 11 mm,Height 3.5 mm,Total Length 35 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.