Whether you need Rolling Ladder, Step Ladder, Mobile Stairs, Work Ladder or Step Stool, this multi‑functional unit covers most elevated‑access requirements. Made of heavy‑duty steel, it features stable structure and great load‑bearing performance for frequent use. Perforated anti‑slip steps deliver reliable grip when you climb up and down the Rolling Ladder and Mobile Stairs. The three‑sided guardrail provides comprehensive surrounding protection for users working at height. Swivel casters equipped with brakes and spring lift structure enable quiet, effortless relocation. Lock the brake system and the Step Ladder stays firmly in place for safe and stable task execution. Product Information: Main Material: Heavy‑Duty Steel Number of Steps: 4 steps Overall Height: 50in Overall Length: 28in Overall Width: 18in Step Depth: 8.78in Max Load Capacity: 661lbs Step Feature: Perforated anti‑slip design Caster Configuration: Swivel casters with brakes and spring lift structure Protection Configuration: Three‑sided guardrail Product Color: White Product Advantages: Anti‑slip, quiet, high load‑bearing capacity, easy to move, stable structure Applicable Scenarios: Warehouse, library, kitchen, office, gymnasium, storage room