Telescopic ladder (ST-N7) 1).Beautiful and creative design, light in weight, top grade, easy to operate, be convenient to carry with, be wildly used in home, office so on farth; 2).Occupation of very little space when folded,and easy to carry; 3).Dealing with positive pole oxidation on aluminium surface make rust-proof ability of product more durable; 4).Safe lock is overtake improve securing when customer using; 5).Safe TPR Loop in erect tube that is avoid nip finger/handle; 6).Multi-Function,Not only full ladder for usage,also we can adjust high for your need;Comfortable,non-slip cellular Foam handle. 7).The ladder can be used fargoingly (such as clean room, snow on the roof...) 8).This product has pass EN131 quality standard; Specification: