Jacobs RubberFlex spindle nose collet chuck with full set of collets from 1/16 to 1-3/8 capacity, all in working condition. Collets come in their original metal cases. Pictures of the tapers are included to show the good condition -- both the spindle-mount taper and the collet taper appear to be defect-free. D1-6 mount even though it only has 3 camlock studs, this seems to be how all of the Jacobs D1-6 chucks were manufactured (they just didn't need the extra torque/load capacity).