L-shaped adjuster for violin. A SWAROVSKI (Tanzanite) is attached to the surface. The screw can also be used for general L-shaped adjusters such as Wittner and tailpiece integrated adjusters. The screw only costs 1180 yen. If you need multiple screws or if you want other colors (see photo 6), please feel free to comment. We will offer a discount for multiple purchases. Wittner Wittner Adjuster Violin Viola A string E string Swarovski Adjuster