Abrasive disks for power-operated grinders; Aerating pumps for aquaria; Agricultural machinery and attachments therefor, namely, rotary mowers, box scrapers, and three-point attachments; Air drills; Automobile engine valve covers; Automotive exhaust pipe; Bearings, as parts of machines; Belts for conveyors; Blades for power tools; Circular saws; Compressing machines; Extension bars for power tools; Machine parts, namely, bearing housings; Piston rings; Power drill bits