7 Power operated, rotating cutting tools, especially reamers, single blade reamers, taper reamers, chucking reamers, chucking reamers with solid carbide head/carbide tips, chucking with unequal and extremely unequal spacing, chucking expander reamers, chucking helical reamers, special front cutting machine reamers, adjustable chucking reamers, adjustable rose chucking reamers, adjustable shell rose chucking reamers, machine reamers, shell reamers, shell helical reamers, high performance rapid reamers, indexable reamers, reamers with indexable cutting inserts, multiplate reamer, revet hole reamers, shell holder, bits for counter sinking, counter boring, precision engineering, drilling, core drilling, shell drilling, routing, reaming, drills, core drills, threefluted core drills, shell core drills, subland drills, indexable precision core drills, center core drills, conical drills, counter bores, counter sinks, taper counter sinks, single lip taper counter sinks, pipe debuning device, step tool for drilling or reaming, tipped step tool, combined reaming and counter boring tool, adjustable step tool, Upped single blade reamer, multi step reamer with adjustable tipped inserts, line boring tool, compensation adapter, floating tool holder, reamer including an axial adjusting unit for the inserted plates and structural parts of all above mentioned parts