Nova 5" Titan Chuck 1-1/4" x 8tpi Direct Thread WITH 2 JAW SETS: 4" Powergrip Jaw Set AND 2" Dovetail Jaw Heavy Duty 5" Chuck is designed for larger lathes and turning projects Direct threaded 1-1/4" x 8tpi fits most larger lathes Includes 1 set of 4" powergrip jaws, 2" dovetail jaws, and woodworm screw Accepts all other Nova Jaws (except older Compaq jaws)