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 ships direct from China at a significant discount in comparison.