The Thule BSTK2 Bike Stacker is a convenient upright, freestanding bicycle storage rack solution designed for use when wall or ceiling based storage is not a viable option. The rack holds two bicycles of virtually any weight, which it accommodates through a combination of heavy-duty steel construction and independently adjustable arms that can be move up or down the length of the unit. Additional features include V-shaped bike holders that cradle and protect each bicycle from frame scratches and chips as well as pinched bike cables.