1. Material: Made of Cold-rolled steel plate + stainless steel, ensuring durability and sturdiness for long-term use.2. Instructions: Easy to install by rotating and tightening the clamp hooks to fit table thickness. No glue or installation tools are required.3. Features: Adjustable clamp hooks for versatile use on tables with a thickness ranging from 5-35mm (0.2-1.4 inches). Silicone padding protects the tabletop surface from damage. Space-saving design allows for horizontal and vertical mounting, maximizing storage efficiency.4. Use Scenario: Organizing your workspace, keeping essential items within reach and neatly stored. Perfect for home offices, study desks, workstations, gaming setups, or any area where space optimization is needed.   Suitable for holding various items like headphones, bags, keys, cables, and more.5. Package Content: Each package includes 4pcs adjustable desk mount hooks made of Cold-rolled steel plate and stainless steel for durable and reliable usage.