Flagpole Trucks are pulley systems secured to the top of flagpoles to aid in raising and lowering the flag. Stationary and Revolving Trucks are they two types of pulley systems produced to use in flagpole applications. Revolving trucks allow the truck to rotate to help prevent the flag from wrapping around the pole. Due to this fact revolving trucks are more commonly used for flagpoles installed in areas where wind is a consideration. To get the correct replacement truck assembly, the top O.D. of the pole must be measured to ensure correct sizing for proper spacing of the rope/cable from pole to prevent rubbing and thus leading to premature rope failure.