This heavy-duty bike stand is designed to accommodate up to 12 bicycles and is suitable for commercial use. It can be used as a single- or double-sided unit and can accommodate most bike tire sizes. The stand is constructed from rugged steel tubing and features a welded grid and side rails that provide strength and stability. The side rails and horizontal tubes have a diameter of 1-1/2" and are made from 14-gauge steel, while the vertical tubes have a diameter of 1" and are made from 16-gauge steel. The stand has a rust-resistant zinc undercoat and black powder coat finish, and pre-drilled holes allow it to be bolted down to concrete. Additionally, included plugs let you seal off unused holes in the tubing to keep out water. Assembly is easy with the included hardware.