Turn the front segment of the crank extractor tool (the black part in the photos) clockwise until it is fully threaded into the hole. Use an adjustable or 15 mm wrench for the last couple of turns.

Place an adjustable or 15mm wrench on the protruding bolt of the crank extractor, which is the end closest to you.

Turn the wrench clockwise to push the crankset off the spindle.