Safety and Stability - Step ladder is made of high-quality thickened aviation aluminum alloy, with high strength and better compressive performance. The 3-step ladder obeys the principle of triangle mechanics, and the thickened aluminum tube maintains the solid support of the ladders. Ergonomically designed handrails make you safer when climbing. Upgraded embedded crossbeam doubly ensures the weight-bearing effect of the ladder without swaying. Aparecium step ladder is ANSI Type 1A Certified