Hyjoy 1/16''-1/2'' Drill Chuck Adapter, 3/4'' Weldon Shank with Chuck Key, 1/2''-20 UNF Thread Drill Bit Adapter, Mag Drill Chuck for Drills

Included Items: Drill Chuck for Mag Drill Press 1; Chuck Key 1 Bottom Taper: 1/2"-20 UNF (Screw Type) Bit Holding : 1/16-1/2 Inch (1.5-13mm) Shank: 3/4 inch (19mm) Weldon Shank Application: For holding drill bits, dowels, small turnings, pen mandrel shafts, etc