ER20 CAT40 High Precision Collet Chuck x 4" length (ER hex nut included).
Techniks collet chucks are widely accepted as the best in the industry. Proven performance on Haas, Fadal, Mazak, Mori Seiki, Kitamura, Hurco, and many others.
Balanced to 18,000 RPM's and taper ground to high precision AT3 accuracy (all meeting or exceeding industry standards)
