2 Inch Silver Cast Aluminum External Halyard Stationary Single Pulley Flagpole Truck Fits on top of a flagpole with outside diameter of 2 inches. The pulley is 1-1/2" outside diameter made of cast nylon. Spins on a 1/4" stainless steel axle. The pulley can handle a maximum halyard diameter of 5/16". Truck is secured to the top of your outside diameter flagpole of 2 inches by a stainless steel set screw. You can easily install an ornament on top of this external halyard stationary flagpole truck. Accepts spindle threading of 1/2"-13NC. We will also supply you with a stainless steel set screw to secure your ornament to the top. Movement: This truck is stationary.