Be aware on many bad and rough tooling that you see on site as well. I have many customers asked me the same questions that how about yours vs theirs. I post run out numbers and video in description, and you can test after receive. However, many other vendors are over or false describe their tool holders and collets. Based on customers who got ripped off from many cheap sellers, the total run out on their bad tool holders and collets could be in 5 thousands rather than 5 tenth, and the drill chuck could be in 10 thousands, plus pull studs break left right. So regardless how cheap they are, it's useless scrap, which is supposed to be sold by weight, not pieces
This is my chuck and collets, see two videos below, indicator is the same 0.0001". Total run out of holder and good set of collets are less than 0.0005", tool holder alone without collets are 0.0001". Since it's balanced, so regardless of speed, holder and collets will running true. Both tool holders and collets must be running true in order get total run out to minimum
cat40er321
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cat40er3211
3PC 1/2 Precision Keyless Drill Chuck
1PC Face Mill Cutter:
