New and high quality! Description: 1. Height adjustable. 2. Gentle anti-slip structure. 3. Prevent biting. 4. Mute without shaking. Material: PP Color: As shown Size: Reference picture Package includes: 1PC Note: 1. Due to manual measurement, please allow an error of 1-3mm. 2. As different computers display different colors, thank you for your understanding, the actual product color may be slightly different from the image.