Reverse threads are perfect where access is limited or the fastener is countersunk, like a wheel nut or bolt. But the removed item is it hard to get out of the socket.

• Remove headless shafts.

• Remove protruding snapped shafts.

• Can be used with impact wrenches.

• Buy a Vice to extract the freed stub from the socket.

• Always wear eye protection.

• Consider impact protection.