Stainless Steel Square Base Long Neck Floor Floor Flange Component Post Holder (For Intermediate Square Posts) 316 Marine Grade Quality- Excellent resistance to corrosion! This high quality component will give you the finishing touches you need for your cable railing deck Helps provide stability and support for your square stainless steel deck mounted posts Secures Intermediate Square Tube Post to Floor Heavy Duty Stainless Steel for Strength and Durability