1.made of aluminium alloy and plastic,light weight(3.43kg),easy ... least 150KG. Production InformationItem NO.KC-7093AL KD Aluminium folding step ladderSize (mm)W410xD790xH1010mmMaterial·Metal Frame: aluminum ... CertificationISO 9001:2000 ISO 9001:2008 1)Made of aluminium and plastic,very light weight,about 3.5KGS,easy to ... ,but also gentle for user. Colorful aluminium and plastic folding step ladder