I have not used it yet, as I have to make backing plate to mount it on my lathe. I'm waiting for a 1" X 10 TPI tap which is due in mid August so I can tap the mounting plate for installation. This lathe chuck is from Asia and the quality is excellent. Each jaw is finely machined and the fit and function is very good. I'm looking forward to using this for some of my projects.The Overall Rating, I gave only 4 stars because I haven't really used it yet, but I'm confident that it will be fine.