Neilsen Stud Extractor 18mm 3/4 Drive External hexagon drive. Removes and installs studs without damage. Works on screw without head, quick and easy to use, no damage to the stud. Safe clamping due to 3 rollers. Stud screws can be screwed in or out without using counter nuts on the bolt. Also for extra long studs that will go through the through socket.
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