7 Snowplough blades, being parts of machines; brushes for street sweeping machines, being parts of machines; blades for earth moving machines, being parts of machines; snowploughs; street sweeping machines; screening machines; self-propelled road sweeping machines; cleaning machines for streets and parts thereof, included in this class; wear linings for screens, being parts of machines; stripping blades, being parts of machines; snow clearing blades, being parts of machines; scraper blades for snowploughs, being parts of machines; wear strips for snowploughs, being parts of machines; wear linings for snow clearing blades, being parts of machines