Plow edge guards, plow blade wear guards, and rubber plow blades, all being parts of snow plows; commercial/highway plows; agricultural plow blades and plows; component parts of road grading and construction machinery in the nature of plows, namely, plow edge guards, plow blade wear guards, plow moldboard shoes; and component parts of road grading and earth moving construction machinery, namely, cutting edges, end bits, bucket teeth, and wear plates