Not impressed so far, fits on the butt of my 5/16x14 cues but does not want to accept a shaft other than a 90's Pechauer. Tightened it to the butt, finish is already got a bubble under it. I am already regretting not having a custom one built. Most likely will be returning what appears to be a piece of junk. Should of done more research, but it was a impulse eBay buy. Not recommended at this point. Hope you have better luck if you get one, hoping for the manufacturers sake I just got a lemon.