Specifications include, but are not limited to: Hydraulic guard rail post driver/puller, truck mounted, new and of current model, equipped as advertised by the manufacturer; It is the intent of this specification to describe a hydraulically operated, gravity drop hammer, guard rail post driver/puller mounted on a 33,000 lb. GVWR cab and chassis. The system will have turntable, frame in/out travel, post and guide rail twist positioning, post puller, reversible foot assembly, bolt-on post and guide foot adapters, and steel plate counterweights. Flat Bed: Shall be constructed of 6-inch I-beam longitudinally, 4-inch channel cross-members, 5-inch channel side rails, corner lights, reflectors, and mud flaps. The bed shall have two (2) toolboxes mounted ahead of the rear axles of the truck, one (1) on each side.