1/2" (12.5 mm) Stud Socket Set M6-M8-M10-M12 4pcs - For thread-conserving installation and removal of stud bolts, threaded rods and hanger bolts - Suitable for right and left hand threads - No damage to the thread in comparison to welding on auxiliary materials or using pliers - Turning without laboriously locking two nuts on the bolt - Safe grip due to three internal rolls - Use with square 1/2" or hex 21 mm wrench - Suitable for sizes M6, M8, M10, M12 Inhalt: 1 stud bolt extractor 12.5 [1/2"] - M6 (301906) 1 stud bolt extractor 12.5 [1/2"] - M8 (301908) 1 stud bolt extractor 12.5 [1/2"] - M10 (301910) 1 stud bolt extractor 12.5 [1/2"] - M12 (301912)