These cable rail deck posts are made of steel with 10 holes cross drilled for fitting all local building code cable railing to your deck. universal design allows you to bolt the plate to the fascia side of your deck the floor plate style is used on deck/floor mount posts. 2 x 2 square or 3 x 2 Intermediate posts are used between the end posts typically every 4 and a center support post every 16. Painted in black powder coat. Please message me about fitment , paint colors, shipping, or any c...