Arbor adapter accommodates standard tools with 0.75-in. Weldon shanks
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
6.35 PILOT BORE WELDON TO UNIVERSAL ADAPTER - Amos Industries
AMW-Store - Eisenbohrer Kernbohrer Metallbohrer Adapter 13mm Schaft auf Weldon 3/4" 12-60mm große Durchmesser
Euroboor Weldon Shank Adapter - 3/4" Weldon to 1/2" x 20 UNF 3 Jaw Chuck Adapter with Milled Steel Construction & Left-Hand Thread - IBK.14 - - Amazon.com