- Only hardware for sale,wooden ladder sold seperately. - Attention! This item only suitable for ladder thickness 1";If you need oak ladder,please search ASIN:B0C7V2B2KG - Material:Aluminum,Surface:Black; Maximum bearing capacity 300LB - Telescopic upper hook means the ladder can be stored against the wall when not on use;We offered end stops for each rail,you can move ladder from one rail to the other rail without buying extra end stops. - 12FT kit Includes 4ft railX3,rail bracketX6, joint in connectorX2,end stopX6,hook on top rollerX2,brakable bottom rollerX2