PSI Woodworking Products TM32 1/2-Inch Diameter Drill Chuck with a 2 MT Mount
#2 Morse taper mount for Delta, Jet, PSI, and other Midi lathe headstocks and tailstocks. A 1/2-Inch diameter 3-jaw mechanism can be used for securing small turnings or pen mandrels at the headstock, or a drill bit in the tailstock. Accepts a 1/4-20" draw bolt (not supplied) for safety. Will hold drill bits up to 1/2-Inch in diameter.  Drill chuck mounted in the #2 MT can be used in either the headstock or tailstock.  Tightens with a chuck key(included) for excellent grip.  Removed easily with a knock-out bar.