Nova 13055 Titan 5" Woodlathe Chuck w/4" Powergrip Jaws, 1-1/4" x 8tpi Direct Thread Heavy Duty 5" Woodlathe chuck Direct threaded 1-1/4 - 8tpi (ONLY fits lathes with this shaft) Includes 1 set of 4" Powergrip Jaws Accepts all other Nova Jaws (except older Compaq jaws) Sealed backing plate with indexing marks