5.7m Aluminum Multi-Purpose Ladder Folding Scaffolding Step

5.7m multifunctional extension folding ladder telescopic folding ladder step-stand home aluminum ladders telescopic quality material: constructed with durable and sturdy lightweight aluminum alloy metal. safety: scientific design on extension and lock mechanism with thumb buttons to click smoothly and effortlessly. operate with ease without worrying about hurting fingers during retraction. compact storage: fully extended height is 5.7m.height after retraction is 1⁄4 of fully extended form. effortlessly stored in car trunk and other limited spaces. highly adjustable: every locking section is independent of one another, therefore can be adjusted to preferential heights for different tasks. close operation: you need retract it from top down, rung by rung.press the black button on the edge of rung,both sides retract at the same time.(