Measurement --- The actual length you need = the distance from the step surface to the roof + 12cm/4.7in/ 0.4ft. Metal Iron Railing --- Made Sturdy & DurableStair Baluster are made of wrought iron durability and strength, powder-coated with a durable satin finish, making them resistant to scratches, cracking, peeling, UV rays, and rust. Nano Baking Paint --- The surface of the staircase balustrade is high-temperature nano-baking paint, which will not rust and is environmentally friendly and healthy with no other odor. Ease of Maintenance --- This complete kit simplifies both installation and upkeep. Its easy-to-clean nature ensures that your indoor stair railing kits or garden deck balustrade remains pristine, blending practicality with aesthetic appeal in your home or garden. Wide Range of Use --- The baluster railing is perfect for decorating different kinds of stairs and flat, use in stairs both indoor ＆ outdoor, porch, backyard, balcony, patio, deck, doorway, platform corridor, garden, farmhouse, loft.