The Dual Purpose Aluminum Step Ladder (166.5cm) is designed to function as both a step ladder and extension ladder, offering safety and versatility for a range of applications. Its lightweight aluminum build, secure locking system, and non-slip feet make it a reliable choice for household and professional use. 1. 166.5cm aluminum ladder with dual-purpose use. 2. Converts between step and extension ladder. 3. Durable, rust-resistant aluminum frame. 4. Non-slip feet ensure safe usage. 5. Lightweight design for easy transport. 6. Secure locking mechanism provides stability. 7. Compact foldable design for storage convenience. 8. Suitable for home and professional use. 9. Reliable for indoor and outdoor applications. 10. Safe and efficient ladder solution.