Blades for power saws; Blades for power tools; Cemented carbide tips; Chucks for power drills; Diamond-pointed metal-cutting tools; Electric floor polishing machines and apparatus; Electronically and power-operated tools, namely, pullers and components therefor, nut splitters, extractors, separators, spanners and coil spring compressors; Machine parts, namely, millstones; Machine parts, namely, polishing discs for floor polishing machines; Mechanical winders and machines for forming coils with pipes made of plastic materials; Nut-tapping machines; Polishing discs for automated wet-polishing multi-head machines; Polishing system for use in single-head machines comprising grinding and polishing discs for stone profiling and edges; Squeegee blades specially adapted for use with floor cleaning machines