[Adjustable Base Design] With an adjustable bottom design, the planter box bracket can be adjusted from 6inch to 12.5inch in bottom width (suitable for almost all POTS). [What You Get] Set of 2 adjustable planter brackets. The top width of the railing flowerpot bracket can be adjusted by 2 inches to 6.8 inches freely according to the width of the railing. Note: A planter pot isn't included. [2 Installation Methods] Not only adjustable hanging , handrails, railings, or fences but also mounting . Come with full accessories, providing nuts and crews, just need to and tighten it, then fix it to the wall or railing with screws. [Real Heavy Duty] This kind of metal bracket is made from 3mm thickness high-quality iron, and each one has a solid weight and density. Made of powder-coated steel for durability resists rusting, chipping, and cracking, and can be used . [Widely Application] Window box holders are Perfect for indoor and outdoor, they can be used to decorate windowsills, decks, terraces, living rooms, and small courtyards. You can use them to display your favorite pots or plants.