Shoring panels; trench panels; posts, props, rails, waler rails and bars, hand rails, safety rails, ladders and steps, all the aforesaid being of metal and for use in shoring, trenching and excavation systems; metal chains for use in or with components of shoring, trenching and excavation systems; struts predominantly of metal for shoring, trenching and excavation systems; hydraulic struts and mechanical struts predominantly of metal for shoring, trenching and excavation systems; brackets of ...