1、Made of quality ebony wood material, smooth surface, hard to break, durable for long time use. 2、Can be used to replace rusty, broken and old strings shaft. 3、Convenient to tuning the strings. 4、Lightweight and portable, easy to install and use. 5、Good accessory for violin maintenance, replacement and use. Features: 1.Made of quality ebony wood material, smooth surface, hard to break, durable for long time use. 2.Can be used to replace rusty, broken and old strings shaft. 3.Convenient to tuning the strings. 4.Lightweight and portable, easy to install and use. 5.Good accessory for violin maintenance, replacement and use. Specification: Material: ebony wood Color: Black Size: Approx. 5.5 x 1.8 x 0.63cm / 2.2 x 0.71 x 0.25in Options: for 1/8 violin, for 1/2 violin, for 1/4 violin Package List: 4 x Violin Strings Shaft