This rating is for the "Standard" version outside the US. The metal parts are of very poor quality with significant beating when attached to a micrometric anvil. In one case, the wedge, the surface that rests on the micrometric anvil, was clearly different from reality to the naked eye. This caused the part to move so much that it just slid sideways when zeroing or measuring. The thinner pin was bent resulting in point contact on one side. This set is less than 1/3 the US made version but not worth the money.
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