After a month of use, this product is fine. However, I have a feeling these gauges will not last long over time. As you can see from the stock photos, the gauges branch well and have more than enough teeth to measure screw pitch, but the axles are plastic knurled and mine is already "stretched" and not tightening anymore , which loosens the fans that pop up on the go. The pitch size markings are printed only, not stamped or etched and will wear away over time. For myself I wouldn't say it was 51 "pieces" and 58 "pieces", only 2 pieces each in my opinion. with many sensors inside. If the gauges were hex keys or torx keys in a set they would be listed as only 2 pieces...but that's just a personal gripe with the current style of 'swelling' in listings/advertising. light user, they will work just fine. If you are more than that I would recommend looking for a more expensive item with a longer lifespan.
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