1.Easy to store and carry: Each slide guitar is the right size and light weight, doesn't burden your stringed instrument, and can easily fit in a bag.2. Easy to change pitch: These slide guitars can change tone to tone, helping you get the right pitch you want. 3. Wide Use: you can use these rotating structures to tune folk classic electric guitars, Ukuleles, mandolins, Banjos, etc. . Practical gifts can be shared with family or friends who have stringed instruments to bring convenience to them. 4. Specifications and material: Stainless Steel and rubber dimensions: Approximately 9.8 cm 3.86 in long, 4 cm 1.57 in wide, 2.5 cm 0.98 in high color: black