1. Ergonomic design: healthy spine, reduce fatigue, play freely, so that the body no longer inhibits the vibration of the guitar back plate, so it releases a greater volume, which is beneficial to increase the volume, simple structure, and very practical. 2. DIY assembly: the piano holder can be disassembled and assembled, which is convenient to carry. The paint coating process is effective to prevent oxidation. The groove is designed at right angles to effectively avoid scratching the piano body. 3. Product characteristics: rubber material transparent soft suction cup, used for guitar body, strong adsorption, high-density EVA, very soft, flexible, curved design to reduce pressure. 4. Functional characteristics: rubber knob, can adjust the height and angle of the piano support by itself, tighten it and then stick it to the surface of the piano body, the suction cup can be replaced by itself, extending the service life. Name: Guitar Flute Suction cup diameter: 4cm Base width: 6.3cm Adjustable angle of piano support: ±30° Adjustable height of the piano holder: 0-9cm (with the center of the lock nut as the origin, the height can be adjusted) Note: Due to material problems, the board on the back of the piano holder is dented or scratched. size:23.5 x 14cm Material:Aluminum+Rubber+EVA colour:black Package Contents: 3 x Guitar Flute Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.