Drill Chuck, 1/8" (3 mm) Keyless 

0" - 1/8" ( 3 mm) capacity keyless drill chuck.

No chuck key is required with this self-tightening design. The chuck is made from hardened tool steel to ensure accuracy and extended life.

The rated capacity is 0 to 3 mm. Number 0 Jacobs taper mount. 0.002" (0.05 mm) maximum runout.