mechanical road graders to be connected to or mounted on wheel loaders, agricultural tractors or other vehicles and machines which can be used for working on roads; wheels and grader blades which are part of mechanical road graders; mechanical auxiliary devices for machines and vehicles for road construction and road and street maintenance, namely, asphalt spreaders, sand and salt spreaders, water and jet spreaders, as well as brushwood removers and cutters for ditchsides; ploughs, ditchploug...