1. Material: aluminum, stainless steel
2. Built-in mute rubber ring, without spring, smooth switch
3. Reinforced base design, good load-bearing, strong and solid
4. Thickened solid shaft, durable
5. Three-hole design, good support, not easy to fall apart
6. Convenient installation, not easy to rust
7. Weight:
- Space aluminum: about 300g
- Stainless steel: about 360g