3D printers; 3D printing pens; Conveyor belts; Cooling radiators for motors and engines; Couplings for machines; Drives for motors; Electric motors, and their parts, not for land vehicles; Electric ducted fan (EDF) motors, not for land vehicles; Gears for machines; Laser engraving machines; Laser engraving machines for woodworking; Machine parts, namely, bearing inserts; Three dimensional (3D) printers; Machine parts, namely, nozzles which are parts of power-operated sprayers; Power drill bits