Large capacity for plenty of plants and flowers growth Adjustable hanging brackets fits 2.5”-7” railings/fences Sturdy Construction Constructed from pure steel that has a matte black powder coating to keep it looking its best all year long. Versatile Placement Hang them on balcony, deck, fence, porch and patio railings with included adjustable brackets or hang against any flat surface with pre-drilled holes. Pre-inserted Coco Liner Coconut fiber liners hold water exceptionally well, which allow plant roots to take up moisture as needed, and also provide excellent drainage.