The variable aluminium multifunctional ladder. Collapsible, with safety joints and locking handles for height adjustment. Can be used as a single and extension ladder, double-sided stepladder and stairway ladder. Height adjustable using the side locking handles on the individual levels. 2 safety joints (can be unlocked and locked) for adjustment to stepladder and single ladder. Automatic locking system. Height-adjustable rung by rung. Inner ladder section: longitudinally profiled 28 mm rung. Telescopic sliding element: longitudinally profiled rung 26 mm. Loadable up to 150 kg. 4x4 rungs