Thank you Duncan. I bought this about two year ago from Amazon. The package arrived opened and the parts were all out of their packaging - the inside of the box was covered in lubricant. There was probably nothing wrong with anything, but I sent it back to Amazon. It was the only time that I ever had a problem with their (Amazon's) shipping/packaging. I should have just asked for a replacement, but I really didn't gave a need for it. I only have Nova chucks and jaws; I am very please with their stuff.I have the Nova live center system. It costs a tad over double this price (in the $75 range) but has several really useful features that I don't see in this one. There is an inverse cone (that is useful for pushing against a ball, for instance), there is a small diameter 60 degree center (Mal described the value of this), and a threaded end which will let you make pretty much any shape you want.
On Amazon at ... LINK
I agree; my expecations are low, but I will not be using them for precision - just to support . Thanks for the feedback.I purchased this set a few years back and found the set I received to be inferior in quality as far as the fit of the inserts. My set seem to have excess play in the inserts and the hole of the bearing so they do not sit true to center all the time. I just chalked it up to the old "you get what you pay for". Your mileage may vary.