Arrived today. Material is quite strong. Was packed nicely. But the quality is just average. I used the 3mm collet and my drill bit just doesnt fit straight. It wobbles. Once the collet is inserted, it takes a little bit of an effort to tighten the nut on the holder. I bought it for using with the RS775 motor. The shaft is a good fit, though it will need a little bit of hammering and as the listing suggests - heat before inserting. But it is a tight fit, so no problem.
I will recommend this for hobbyists, but probably not for professionals.
realbladesYoudo know to fit the collet into the nut first, then both into the holder as a unit. That way the ejector flange inside the nut will catch the groove in the collet and pull it out.
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