$15 Shipping — Free 1st exchange — Since 2003
These lil doo-dads are what your stopper threads into on a Powerdyne Thrust nylon plate. They are a separate piece from your plate, and are commonly broken when your stopper is not threaded far enough into the insert.
Note: Depending on your plate, you may need to replace your mounting hardware as well. This hardware is also available in the hardware menu.