1. Thickness of tube is 1.5mm 2.A small Volume after folding, easy to use,carry and storage. Aluminum telescopic ladderOpen Size:3200mmFolding Size:750mmSpace between step:300mmPacking:Pvc ,Label , CartonN.W/PC:9.3 kgsN.W/Ctn:9.3 kgsG.W/Ctn:10.3 kgsPC/Ctn:1 pcsCtn Size:75*52*11cmQTY/20' Container:652 pcsQTY/40'Container:1585 pcsDelivery Time:30 days