Core functional modules High quality material, strong load-bearing capacity Material selection: Made of high-quality carbon steel, which is commonly used in bridge and ship structures and has excellent durability. Load bearing capacity: Equipped with metal expansion tubes, it can stably support the weight of adults without shaking or deforming during use. Strengthen the structure, stabilize and ensure safety Double connecting rod design: significantly improves the overall stability of the armrest and reduces the risk of accidents. Reinforced base design: A sturdy steel plate is used between the armrest and the wall to increase the load-bearing area, making it more secure after installation. Rust resistant and durable, long-lasting use Core feature: Carbon steel material has excellent rust prevention performance and is not easily corroded by environmental influences. Service life: Balancing material and structural design to ensure long-term use without easy damage and frequent replacement. Multi wall adaptation, strong universality Wall compatibility: Suitable for various wall materials such as tiles, wood, concrete, marble, etc. Core purpose: Designed specifically for stairs up and down, providing safety support and ensuring travel safety.