For sale is a Jacobs No. 33 (633C) chuck, used, in mechanically sound shape. I am also including a J33 to MT2 taper adapter, which you se both inserted and removed. This chuck has a protective threaded collar for secure mounting on Quality Drill Presses such as Clausing or Powermatic, such as My Powermatic 1150 Drill Press. Capacity up to 1/2". Actually can take a little more, in my experience.