DecKorators Polished Copper Post Points Post Cap Set of 4 DecKorators beautiful Post Points made of Copper plated Stainless Steel For posts measuring 3-1/2 x 3-1/2 (nominal 4x4) Top off your fence, porch, or deck design Slip over the top of a 4x4 fence or deck post for a decorative finishing touch or to hide irregular Easy installation, just apply exterior caulk to the under-side of the post point