7 Machine-driven tools in the nature of cutting machine tools, cutting machine tools with fixed or exchangeable cutters made of hard cutting materials, namely, drilling tools, pilot, center and lead drill bits for drilling tools, reboring and boring-out tools, superfinish lathe tools, [ grinding tools, ] countersinking and deburring tools, lathe tools, lancing tools, threading tools, milling tools; cutting machine tools with exchangeable boring-out rods and boring-out steels, namely, chisels for inside and outside work, lancing and threading; support, guide, adjusting and clamping elements for use in the aforementioned machine tools, namely work holding fixtures, work-piece fixtures; manually adjustable and machine adjustable machine-driven tools, namely, manually adjustable drilling tools and cutting machine tools, machine adjustable drilling tools and cutting machine tools; machine-driven facing lathe heads; machine-driven special tools and their components, namely, machine-driven saws, saw blades and saw inserts made of hard cutting materials for the aforementioned saws; tool-holding fixtures or adapters, namely spindle flanges, taper shanks, clamping chucks, extension and reducing pieces for use with machine tools; modular mounting tools with couplings as interface and separation points for manual or mechanical coupling of tools, machine tool spindles, and tool components to one another; devices for the handling and clamping of work pieces in machine tools, namely, alignable and non-alignable clamps and work-piece holders made of metal as well as modular clamps and work-piece holders made of metal for the handling and clamping of work-pieces and auxiliary parts; machine-tool clamps for modular interface and separation points designed in the form of hollow shafts as well as their components; machine-tool spindles; cutting inserts, reversible cutting plates and lathe chisels of hard cutting materials for use in machine tools; tool holders with firmly fixed or exchangeable cutters for use in machine tools, namely, reversible cutting plate inserts, lathe chisels, clamping and mounting inserts and holders, superfinish lathe inserts and parts thereof, namely, bolts, clamps and screws; machine tool spindles and setting devices without electrical/electronic components for the setting, alignment and adjustment of mechanically operated tools; drive units, namely clutch and actuating drives as components included in the aforementioned machine tools; machine-tools with integrated electronic measuring systems, namely, drilling tools and cutting machine tools with integrated electronic measuring systems