Ultra Durable 9704230 Blender Drive Coupler with Spanner Kit Replacement Parts by BlueStars - Easy to Install - Exact Fit for KitchenAid KSB5WH KSB5 KSB3 Blenders
Replacing Coupler On KitchenAid Blender KSB465 - YouTube
How to remove a KitchenAid Blender Coupler using a K A Parts spanner / wrench - YouTube