1. Material: ABS 2. High adaptability to real machine, strong practicability 3. Strong and durable, not easy to damage 4. Long service life 5. Diameter of the top of the adapter: 3.8 cm 6. Diameter of the bottom of the adapter: 3.5 cm 7. Adapter length: 9.1 cm 8. Shelf size: about 17x8x8lm 9. Weight: about 160 grams for the shelf, about 45 grams for the adapter 10. The set includes: a shelf, 2 adapters, 4 expansion tubes, 4 screws
