These stationary slip fit Type flagpole trucks with a single pulley are made of molded fiberglass construction with 3/4 in. outside diameter nylon pulley on a 3/16 in. stainless steel axle. The stem of the truck is designed to slip into a 2-1/2 in. inside diameter pole top and is held in place by drilling thru the pole and securing the truck to the pole with an appropriate size bolt or screw (not included). The top of the truck is designed to accept an ornament with a spindle threading of 1/2 in. Maximum halyard size is 1/4 in.