Specialist tap / taps with guiding / remote control, for threading under sleeves above dimension glow plugs M8 x 1, M9 x 1, M10 x 1, M10 x 1.25, M12 x 1.25, ratchet tap knob, a set of specialized taps for socket of glow plugs, bushings for thread repair and regeneration (two-stage specialist), emulsion