LFA Industries 520-2JT 0-3/8-Inch -.5-10 mm Capacity, 2 Jacobs Taper Mount Keyless All Steel Ball Bearing with Super Holding Drill Chuck Keyless All Steel Drill Chuck LFA Industries 520-2 Jacobs Taper Mount All Steel Ball Bearing 0-3/8-Inch-.5-10 mm Capacity, 2 Jacobs Taper Mount Made in France over 85 Years