Belt sanding machines; Electric pumps; Electric sanders; Electrical ultrasonic cleaning units for labware; Orbital sanding machines; Polishing machines for use in grinding and polishing metal, wood, ceramics and plastics; Power-operated angle grinders; Power drills; Power tools, namely, burrs; Power tools, namely, circular saws; Screwdrivers, electric; Slotting machines; Soldering irons, electric