There are also ladders made out of wood which are quite strong they were used in world war two. Step ladders are made out of metal so they are very very strong.
The PiViT LadderTool is not to be used under the foot of a step ladder. Improper use of the PiViT LadderTool or RoofBoots could result in serious injury or death.. * Not for use on Metal or Tile ...