Wanted to have extra chucking capacity on my lathes tail stock Like that it comes with a spanner wrench to apply addition clamping pressure on tooling shanks. Tried it on my drill press and found the run out to be vary little to nothing. It has many construction appearance features like a Albrecht Chuck costing 3 times the price.
I do plan on purchasing another one and selling my Albrecht chuck. Have found Grizzly tooling to be the the best of Quality, Consistency & Value. Bill
B Naperville IL