Description These post caps attach stainless steel posts to a flat toprail without any space between the two. Order enough intermediate and terminal caps for each intermediate and terminal non-stair post in your railing system. Secure with #10 x 1.25″ Flat Head Screws. Note: Stainless Steel is highly resistant, but not impervious to the elements, and requires minimal maintenance for ideal results. We recommend applying Passivator to all exposed stainless steel components at the time of installation. In addition, apply Rust Rescue if within 10 miles of a marine environment to further protect the stainless steel. Learn more about these products and general stainless steel care on our Cleaning & Maintenance Page. Product # 731373 & 731380