LFA / Reichel Hardware 5203-1/2-20 Keyless Light Duty Single Sleeve Chuck, 0-3/8 - .5-10mm Capacity, 1/2-20 Threaded Mount Keyless Drill Chuck LFA Industries 5203-1/2-20 Light Duty Single Sleeve Plastic Shell Requires Spindle Lock On Hand Tool 0-3/8 - .5-10mm Capacity Made In France Over 85 Years