Designed to fit externally on a 2 1/2" (2 3/8" OD) chain link fence posts Made from high-quality rust resistant die cast aluminum, these caps are ideal for outdoor fence use Pack Size: 12 aluminum fence caps Protect your fence from harmful damage from water and debris by having this pack of aluminum caps Easy to install and no tool necessary Add a finished look to your chain link fence all the while helping to prevent harmful damage caused by water and debris build-up in posts. Made from high-quality and durable die-cast aluminum, this pack of 12 fence caps is built to last and is great for outdoor fences. Designed to easily fit externally on 2 1/2" (2 3/8" OD) chain link fence posts.