Not sure about other reviews but the socket head set screws were good and the fit and finish of the entire MT3 to 3 Weldon/4" adapter was Excellent I use it in a lathe tailstock now, so I can't tell you how much runout there is, but everything else is there.It has an internal relief spring that will take 2" deep knives and is strong enough to take the Eject ball perfectly Good deal!
I had to modify the ejector pin on my clubs to fit this mandrel. The spring washer on which the ejector pin runs was not accessible due to the small size of the detent hole. I tried removing the retainer through the locking ring but the retainer would not come out. Was in a dilemma and had to use a tool so had to unscrew the ejector pin to fit this cheap mandrel. I also find that the tool has significant runout. Basically a piece of 100% China. You might as well buy one on ebay that shipsβ¦
>>> DON'T LOSE MONEY <<< I have purchased other Accusize tools with great success, with the overall quality and performance of some carbide rotary boring tools. However, the main problem with this tool was that the hole that the cutter enters was not concentric with the shaft as it measured a total of .026" after the cutter was tightened with set screws. I don't have any previous reviews. Didn't even bother to see if the set screws were worse. Sorry if you are reading thisβ¦