For sale is a LYNDEX C4007-0016 ER 16 Collet Chuck Description ER Collet Chuck, CT 40, C4007-0016 Model, CT40 Taper, ER16 Series, .019-.406, Range, 3.50, L, 0.87, L1, 1.26, D:ModelC4007-0016 SeriesER16 Capacity.019 - .406Gage Len.3.50TaperCT40Range.019-.406, ColletER16D1.26, L3.50, L10.87, ModelC4007-0016Range.