Extra Parts 1 5/8 inch Post Cap NextAluminum Loop Cap: 1-5/8" to 1-3/8" 1 5/8 inch Post Cap 1 5/8 inch Post Cap $5.95 1 5/8 inch post cap which is installed on top of 1 5/8 inch fence posts and used to hold top cable. Also used to secure 1 5/8 inch gate post brace pipe. Quantity: Add To Cart Facebook0 Twitter LinkedIn0 Reddit Tumblr