Pro Jax Utility Scaffolding from Bil-Jax features steel square-tubed construction and a durable plywood deck with steel supports underneath. Knurled rungs allow extra gripping, and a spring-activated locking system ensures deck safety. Adjust the height of the deck to suit your specific needs. Four swivel casters with locks let you easily move the scaffolding around your work area. The steel guard rail keeps you safe while you work.