Cast aluminum construction designed to slip over the top of the flagpole and be secured with three 1/4 in. -20NC stainless steel set screws. The top of the cap is designed to accept an ornament with a spindle threading of 1/2 in. -13NC as standard but can be equipped with other sizes of threading or no threading. Standard colors are: Silver, Bronze #313, White and Black.Click on the item number for more details regarding the product.