Atlas Workholding NB-K8

8″ Chuck Diam, 0.29 to 3-1/2″ External Chucking Diam, Low Profile Machining Chuck 6.85″ Bolt Hole Spacing, 2.36″ Through Hole, 2.44 to 7.48″ Internal Chucking Diam, 10.63″ Base Width x 2.56″ Base Height