Secure Attachment Knob tightening system provides a firm grip, prevents slipping and scratching, and ensures stable performance during use. Universal Compatibility Adjustable clamp fits tube diameters from 13 to 47 mm (0.51 to 1.85 inches), compatible with most standard stands and equipment. Flexible Positioning Height adjustable with 360degree rotation for flexible positioning of a sound card, phones, tablets, or other accessories. Material Made from quality PP material for reliable stability while remaining lightweight and portable for various applications. Use scenarios Studio or recording setup: attach to a compatible stand to hold a sound card or audio interface within easy reach, reducing desk clutter and maintaining stable placement. Live streaming or video calls: position a smartphone or tablet at the ideal angle for hands viewing and smooth camera alignment. Desk or field use: portable tray on a stand to hold small devices and accessories during presentations, rehearsals, or classroom use.