• Heavy Duty 5″ Chuck for larger lathes and turning projects• Direct thread 1-1/4″ x 8TPI- fits most larger lathes (16″- 24″ lathes)• Includes 1 set of 5″ Powergrip jaws (3 screw mount), and Woodworm screw• Accepts all NOVA Jaws (except older Compaq jaws)