A chuck require a key to provide the necessary torque to tighten and loosen the jaws.
Our chuck key which is ideal to tighten and loosen a chuck.

• Item Name : Chuck Key;Pilot Diameter : 8mm/ 5/16"
• Gear Diameter : 22mm/0.87";Shank Diameter : 8mm /0.31"
• Overall Size : 10.5 x 6.5cm/ 4.1" x 2.6" (L*W);Color : Black
• Material : Metal;Teeth Number : 11

Item Name : Chuck Key;Pilot Diameter : 8mm/ 5/16"YXQ