Oneway Model #0322 1 1/4" x 8 TPI This Adapter will fit the Oneway Stronghond Woodturning Chuck and Oneway Vacuum Drum Chucks For Powermatic 3520, 3520A, 3520B, 3520C, 4224, 4224A, Robust Lathes (and possibly others). Note: Oneway does NOT include the 2 set screws (grub screws) used for reverse turning with this adapter. Oneway does NOT include the socket head cap screws needed for mounting with this adapter.

Allows you to mount a Oneway Stronghold Chuck (#30589, sold separately) to a lathe with a 1-1/4" x 8 TPI drive spindle.