RATIO

Tools as parts of machines in the nature of drill bits for power drills, [ drill chucks for power drills, thread milling cutters, ] and milling cutters; [ machine tools for the cutting of materials; ] mechanically operated tools for machine tools, namely, power operated tools as metalworking tools in the nature of drilling tools; mechanically operated tools, namely, milling cutters; [ mechanically operated tools, namely, thread milling cutters; mechanically operated tools, namely, reamers;] mechanically operated tools for machine tools in the nature of drill bits for power drills; [ mechanically operated tools for machine tools in the nature of drill chucks for power drills ]

[ Repair and maintenance of rotating and cutting tools ]

[ Material treatment, namely, grinding and coating of rotating or cutting tools ]