Magnetic Drill Press Universal Adapter for 1/2" Drill, Keyless Chuck - MBA USA, Inc.
Hougen 01829 1/2" Spindle Chuck Adapter (Threaded) - for the
Heavy Duty Mag Drill Chuck - 5/8" For Magnetic Drill Press - Tapered Adapter NEW | eBay
Milwaukee® 49-59-0020 Chuck Adapter, 3/4 to 1/2 in Shank, For Use With M18™ FUEL™ 1-1/2 in Magnetic Drill and 3/4 in Weldon Shank Annular Cutter | Dillon Supply
Chuck Adapter for Bench Motors With 5/16 Shafts - Etsy