Machine parts, namely, tool bits for machines and tool bit holders for use in power operated construction, mining, and agricultural machines; machine parts, namely, wear resistant pieces consisting of coated cemented hard metallic compositions, namely, coated inserts to be used in dies and tools for working, cutting or shaping metal and other materials, in lathe-centers, in bearing-surface and wearing-surface parts, in pump-valves and replacement parts therefore; machine parts, namely, cutting tools, lathe-centers, bearing-surface and wearing-surface parts, and pump-valves which embody such wear-resisting pieces and other materials; coated dies, and coated cutting tools and cutting tools, namely, cutting inserts, toolholders and workpiece holders for use on power operated machine tools; machines and machine tool accessories, namely, cutting inserts, drill bits, dies, punches, mechanical seals, reamers, endmills, tab bonders, saw blades, taps, and mining and construction bits, having a ceramic, [cermet] *cement*, or cemented hard metal composition base with a diamond coating thereon, to be used for cutting, working or shaping metal or other material; machine tool accessories, namely, quick-change tooling in the nature of clamping units, for supporting and mounting detachable cutting inserts, and replacement parts therefore; machine tool accessories for metalworking operations, namely, detachable cutting inserts for mounting on toolholders, toolholders for supporting such inserts and replacement parts therefore; mining bits for power-operated machines and toolholders for holding interchangeable mining [its] *bits* for power-operated machines, all for use in the mining industry; chuck jaw assemblies for power operated machine tools; machine and machine tools, namely milling cutters, consisting of endmills, face mills and shell mills, hand scrapers, indexing tables, ball nose finishers, ball nose roughers