Extension and Retraction Design: Compacting from handy 109cm (3.58ft) to 6.2M (20.34ft). With inward slide latches, you can adjusts the height of the ladder rung by rung in 30cm increments to fit specific requirement such as repairing ceiling lights, hanging picture frames or painting walls; Safe and Compact: Comes with 2 Hooks for secure fixing. Featuring durable aluminium design, industrial-grade height-locking latches and solid anti-slip rubber-tipped feet on the bottom of ladder step. The telescopic ladder is approved by safety standard EN131;