It boasts excellent quality and can withstand the specified weight, as described. It proves user-friendly for ascending or descending stairs, yet it encounters a few issues. Firstly, the installation manual lacks comprehensive details. Secondly, the holder easily extends, but retracting it requires additional effort, necessitating the use of your neck or another person's assistance. The third issue lies in the extendable third leg, lacking a secure lock. This becomes problematic during stair use, as it tends to open and close intermittently. Addressing these concerns would make it an outstanding and highly efficient product.