Gr8 Garden Adjustable Black Metal Mobility Handrails for Outdoor 1 to 4 Steps Stairs Safety Steel Railing Grab Handle Bannister Rail. The railing for steps provides extra security for the elderly, children, pregnant, disabled family members, and people after surgery. It can be installed on concrete, brick, and wood steps of porches, balconies, gardens, residential buildings, hotels, garages, etc. This outdoor railing is ideal for places where you cannot attach to a wall or structure.