The retainer assembly type that screws to the thrust plate. Aero Pack is still on backorder. Just in case you have an extra one you aren't using.......
Per the Aero Pack website description:
Per the Aero Pack website description:
- Two-Piece Light-Weight Assembly For 75mm Motor Mount Tubes
- Precision Machined 6061-T6 Aluminum With Mil-Spec Type II Black Anodizing
- Twelve 6-32 Stainless Cap Screws and Threaded Inserts Included
- Large Quick-Turn Threads For Fast, Tool-Free Motor Change
- Installation: Flange-to-Centering Ring Attachment, No Adhesive!