The type of coupler was different from what I was thinking. There was no compatibility with the joint of the tube of the super drill (Makita). Is there a thing with a male tip length of 14.5 mm? What is the female corresponding to that? The thing purchased this time, the tip of the male was about 9.5 mm and the diameter was a little small. Which product suits the coupler at the end of the tube of the super drill? Please tell me.