Features & Benefits
- Combines 3-jaw and 4-jaw chuck
- Automatically centers square or round stock
- Grips thin-wall tubing in four places rather than three
- Holds parts from 3/32 inch diameter up to 1-3/16 inches with jaws in normal position
- For larger parts, see the 3.1 chuck, P/N 1076
- Available in several spindle threads for use on Sherline machines and old Unimat lathes