This Global Industrial Deluxe 9-Bike Wave Bike Rack features heavy-duty 2-3/8" diameter steel tube construction. The fully-welded one-piece design is easy to install, predrilled holes in the mounting flanges for surface mounting to concrete surfaces. A durable gray powder coat finish prevents rust and corrosion. Items are instock ready to ship! Check out all of the Wave Bike Racks we have to offer in our catalog.