3/16"- 3/4" Heavy Duty Drill Chuck with Chuck Key and R8 Arbor

Heavy duty design. Suitable for drill presses or lathes spindle accepts R8 shank Jaws are specially engineered to achieve balance. JT3 mounted. Clamping Range: 3/16" - 3/4". R8 Shank. Key included Accuracy: 0.005" Chuck Outside Dia: 2.57".