The FLEXTAPPER is designed for the cutting of threads with robot. The tap can be inserted without problems in bores due to the floating chuck. The floating chuck can compensate radial and angular misplacement errors between tapping hole and tap axis when inserting the tools. The FLEXTAPPER 110 can be used for tapping in through holes of any length. The FLEXTAPPER 120 can be used for tapping in through- and blind holes. The maximal axial offset is 10 mm.