It is imperative that you correctly fasten Fence Armor to your posts. To make this process as simple as possible, we offer #8x1" self-drilling Stainless Steel screws. If the post is wood, you can screw directly into it. If the post is vinyl you can pre-drill the hole to prevent cracking in cool weather. Screws are sold in packs of 25. Screws come in Black, White and Mill finish.