Multi Purpose - Fully Extended: 620x48x8.5cm(H*W*D); Folding Size: 109x48x8.5cm(H*W*D), space-saving storage; 15 adjustable steps, step spacing: 40cm. You can adjust the height as you need. Portable & Lightweight - Approx.: 16.3kg/36lb, which is convenient to carry anywhere. Fixed with a storage straps. Suitable for working on a wide range of domestic roofs. Sturdy & Durable - Made of high hardness aluminum alloy tube, better quality and safer. Fully safe load bearing 150kg/330lb, suitable for most people. Security Features - Designed safety in mind, come with Ladder Roof Hook Good secures ladder on the roof. Guarantee your safety with anti-slip rubber foot and non-slip treads. CE & EN131 Certified. Easy Operate - Extension and retraction, for extension, pull a section up, hear the "click" sound, confirm both left/right locks are in place; for retraction, unlock the step, then each step falls slowly and smoothly, the problem of pinching hand is completely solved.