1. Material: ABS 2. 30 degree oblique arc, no damage to the hat 3. Round hook, strong and durable 4. Storeable hooks to store small objects such as keys 5. ABS thick material, strong load-bearing 6. Can be freely combined, easy to disassemble 7. Compatible with a variety of caps, wide storage range 8. Stored vertically without taking up space 9. Cap ring diameter: 13.8 cm (cap circumference cannot be less than 43 cm) 10. Weight: 35 grams 11. Note: only shelf, no other items
