Annular Cutter Adapters Extensions 3/4 to 1-1/4 Inch Weldon Drive ID 2127-
Hss Thread Shank To Weldon Shank Adaptor B16 With Fein Shank / One-touch Shank Adapter For Annular Cutter - Tool Parts - AliExpress
Eumtenr HD Chuck HEAVY DUTY 5/8" (16mm) Magnetic Drill Chuck with 3/4" Weldon Shank Adapter Key Type Chuck Converter Tool for Drill Press (B16) - - Amazon.com