Advantage:This cable railing post is made of T304 stainless steel, high hardness, impact resistance, waterproof and corrosion resistance, not easy to deform or break.Pre-drilled holes on adjacent surface with standard 3” distance.It can work as both structural end posts and middle posts in level sectionsCast brackets, lag screws, and expansion bolts are enough provided, allowing the cable deck railing post to be installed quickly and easily.Work great for long life time for interior and exterior railings with low maintenance. Suitable for indoor and outdoor applications like deck, stair, porch, balcony, and fences.Specification:Material: 304 stainless steelColor: BlackConnect Methods: Concrete/WoodHole Diameter: 4.