Machine tools and parts thereof; tool holders (parts of machines); hard material tools for machine tools; machines and apparatus for knife cutting (non-manual), drilling, grinding, sharpening, milling and for surface treatment; tools for cutting, drilling, grinding, sharpening, milling and surface treatment (parts of machines); tool holders (parts of machines); tool holders for internal turning, turning tools, internal turning tools, brazed turning tools, turning tool holders, height-adjustable tool holders, grinding wheels, roller burnishing forms, roller burnishing discs, drill bits, micro-bits, taps, drill heads, inserts, turning inserts, internal turning inserts, blades, knife holders, milling cutters, micro-milling cutters, hob cutters, indexable milling cutters for cutting by generation, face milling knife cutters, profile milling cutters, thread milling cutters, arbor hob cutters, shank hob cutters, bevel gear milling cutters, hob cutters for crown wheel gears, rack milling cutters, tooth chamfering milling cutters for cutting by generation, thread milling cutters for endless screws, profile hob cutters, engraving milling cutters, thread milling cutters, ring-thread milling cutters for automatic lathes, power skating tools, pinion tools, reamers, micro-reamers, circular milling cutters, pointers, center drill bits, cutting inserts, cutting insert holders, tool inserts tips, all parts of machines made of hard materials, namely, cubic boron nitride, carbide, corundum, silicon, ceramic, diamond, tempered steel, hard metal, frits and cermet