LFA Industries 520-3/8 0-3/8-Inch -.5-10 mm Capacity, 3/8-24 Threaded Mount Keyless All Steel Ball Bearing with Super Holding Drill Chuck Keyless All Steel Drill Chuck LFA Industries 520-3/8 Threaded Mount All Steel Ball Bearing 0-3/8-Inch-.5-10 mm Capacity, 3/8-24 Threaded Mount Made in France over 85 Years