Review on Headset Wrench Bicycle Spanner Mountain by Richard Muncy

When I placed this wrench on the 32mm nut on the headset, it felt a little loose and unreliable. It worked but tended to slip off. When I measured the distance between the jaws of the wrench it was 32.5mm. I don't know what the tolerance should be, but I thought 0.5mm (0.02 inch) might be too much. With the 32mm, the key doesn't go in the neck like with the 30mm. On closer inspection, the surface of the jaws that come in contact with the nut appears to be quite rough: unmachined. I'm sure a more expensive head wrench would have had better quality and a more secure fit. I later regretted not having spent a little more on a quality key.