Cast aluminum construction with a 1 7/16" outside diameter cast pulley on a 1/4" stainless steel axel. Designed to slip over the top of a flagpole and be secured with three 5/16"-18NC stainless steel set screws. The top is designed to accept an ornament with a spindle threading of 1/2"-13NC as standard but can be supplied with other sizes of threading , if necessary. The ornament is secured to the truck with a 1/4"-20NC stainless steel set screw. Maximum halyard diameter is 5/16". Available in silver, bronze #313, white and black.