With your new 20 piece westfalia tapping cutter set with ratchet you now have everything you need for professional tapping with this high quality set they always have the best results features extensive set for internal and external threads high quality steel adapter with ratchet winches and quick connector sturdy metal case with clear pvc insert measurements 342 x 21 x 3 cm weight 183 kg technical specifications m3 x 05 mm m4 x 07 mm m5 x 08 mm m6 x 10 mm m8