Bailrail Post Size: Height: 85cm, 90cm, 95cm, 100cm. Square column diameter: 4x4cm. Swivel head size: 4x4cm. Distance from the wall: 8cm. Wrought Iron Material: Made of thickened material, baked at 180°C, rust-proof and wear-resistant. It can withstand prolonged exposure to external environments while maintaining stability. Adjustable Angle: 270° rotatable bracket with flexible rotation to accommodate steps of different heights; match your favorite wood and iron handrails. Easy Installation: Installation of the railing posts is simple and straightforward. Simply drill holes and secure the brackets with expansion screws. A 6-inch installation spacing is recommended. Wide Applications: Ideal for indoor and outdoor patios, porches, balconies fences residential buildings, gardens, hotels, porches and other places with stairs or steps.