I ordered this product to remove the fan clutch nut from a Jeep Liberty water pump which requires a 36mm wrench. Unfortunately it was just over 36mm and not square enough to hold the nut for it to be removed (just kept slipping off the nut). I gave up and bought a new adjustable wrench so this board was a waste of money for me. The metal was almost 1/8 inch, I think very strong.