One of the very best chucks on the market today is the Oneway Stronghold. This chuck revolutionized woodturner's chucks by using a key rather than two bars, an interchangeable insert (to use on different lathes, rather than using a threaded body), high precision machining and higher wear steel on moving parts.
This is also a first: to buy only the body and not an entire chuck, allowing different jaws rather than changing jaws for different operations. You do get the chuck body, Allen wrench for changing jaws , key and the threaded insert. What is missing: the worm screw and a set of Jaws.
Alan carries the small spigot jaws, tower jaws, smooth jaws and the full line of jaws available for the Stronghold. Contact Alan for jaws not shown in the store for pricing. email@example.com