VERSATILE COMPATIBILITY: Our ladder levelers for extension ladders are designed to fit most standard extension ladders, providing stability and safety on uneven surfaces. Perfect for both professional and DIY use, this ladder leveler is a must-have for any toolkit. Product is suitable for ladders max base width: 24 and max foot length 5.5. STAIR LADDER LEVELER: Safely tackle projects on stairways with our innovative stair ladder leveler. This feature ensures your ladder remains steady, allowing you to work with confidence on any staircase. Ideal as a ladder leveler for stairs, it enhances your safety and efficiency.