T 316 Stainless Steel Round Post Cap Component for Adjustable Flat Wood / Stainless Steel Top Hand Rail Attachment, Cable Railing Deck (Intermediate Posts) 316 Marine Grade Quality - Excellent corrosion resistance! Strong articulating joint saddle bracket for stair guard rail Perfect for flat wood or metal recangular top rail Brushed to a beautiful 180 Grit Finish to minimize sun reflection in your eyes