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
