These are for the internal cable winch style flagpoles.
All of these cast aluminum trucks have a 1 1/4" NPT threaded spindle which screws into the top of a flagpole where a female fitting has been installed. The top of all trucks are designed to accept an ornament with a spindle threading of 1/2"-13NC as standard. The ornament is then secured to the truck with a 1/4"-20NC stainless steel set screw. The extra large model has stainless steel sealed lubricant bearing assemblies while all the other sizes utilize stainless steel ball bearings in both upper and lower bearing races. All sizes are supplied with a stainless steel bushing at the cable exit point except the 10 1/2" which has a bronze fitting.