... widely 3.Able to fold, easy storage Commodity name: Aluminiu, multi-functional ladderType:4 section*4 steps 4*2 4*3 ... multi-functional ladder with platformStructure:Combination ladderMaterial:Aluminium 6063Thickness of Aluminium: ... PP,Safety lock t o make three junctures stable, The structure is stable, high safety coefficient,Bearing capacity is strong, function ...