These poles are made of fiberglass and are shipped in two pieces. There are two couplers that are drilled and glued onto the rod and there is a threaded rod that will screw into the open ends of the couplers. This way they won't come apart as easily during a ride. Loctite is recommended to be used on both ends of the threaded rod for a permanent hold. Final size is 7' tall x 5/16" diameter which covers most state requirements once mounted - mounting bolt included with the pole and mounts into a 1/2" hole on your ride.