Grizzly H8388 - 0-1/2" x CAT40 Keyless Drill Chuck with Spanner Wrench
This keyless drill chuck has an integral shank which enhances accuracy and rigidity. All of the contact surfaces have been hardened and precision ground. The capacity of this chuck is 0 - 1/2". Use the knurled grip to secure smaller drill bits, or use the included spanner wrench for added torque when securing larger bits.