7 Electrically or by compressed air driven machines for the working and/or the processing of metal, timber, plastics, concrete or stone or other materials, namely, metal working machines, wood working machines and timber harvesting machines; electrically driven power tools and compressed air driven power tools, namely, grinders, power-operated sanders, power-operated polishers, brushing machines for wood and metal brushing, power-operated saws, circular saws, jigsaws, milling machines, routers, electric planers, electric drills, cordless power drills, impact drills in the nature of power drills, rotary/chiselling electric and pneumatic hammers, power-operated chain mortises, power-operated sheet metal shears, power-operated screwdrivers, cordless screwdrivers, power-operated notchers, power-operated nibblers, stirrers, carpet removal machines, power-operated files; machine tool parts, namely, saw blades, saw chains, cutters, grinding wheels, cutting wheels, abrasive sheets, abrasive discs, diamond abrasive discs, tungsten-carbide abrasive disks, grinding rollers, sanding pads, brushes, planer heads, planer blades, chisels, drills, screwing bits for power-operated screwdrivers, polishing sponges, polishing felts, stirring rods, copying rings and chucks; drill stands for power-operated drills, namely, stands for machines; electrically or by compressed air operated vises; dust extractors for dry or wet applications and structural parts therefor, namely, suction hoses, filters, filter bags, extension tubes and nozzles; guides and stops for machines, including guide rails and side stops, namely, structural parts of machines; guides and stops for work pieces, namely, ripping-cut fences, trimming attachments and preset profile setting rails all being structural parts of machines; structural parts of all the aforementioned goods