Traditional wood spiral stair case kits have come a long way with us. We are the first to introduce a unique hidden cantilever joint, adding strength and stability to the tread assembly in one simple connection. No more additional lag screws, plugs, or large connecting hubs like other manufactures. Our wood stair will provide the elegant and clean look of a solid wood stair that will enhance the beauty of any home.In addition to the traditional wood spiral stair, we also showcase a stair that bends a few rules, the Double Helix! The Double Helix is a spiral stair with imagination! Unlike the traditional spiral stairs, the Double Helix has no centerpost. Instead this stair has two distinct inside/outside sets of helical handrails and stringers. This stair is available in five standard diameters: 5′, 6′, 6’8, 8’6 and 18′. The double helix spiral stair is crafted from fine red oak or mahogany and applied with a clear finish. Custom orders may include walnut, cherry, or maple and come with a finish all your own.