This prop adapter is designed to be used on the rear shaft of the Cobra 22mm motors in applications where you need to use a reverse mount on the motor. The prop adapter is designed to fit on a 3.17mm motor shaft, and attaches to the shaft with a set screw.
The Spinner Nut on this prop adapter is 18mm in diameter and 18mm long. The threaded shaft on this prop adapter is 8mm in diameter and has a Metric M8x1.0mm thread.
Included with this part is the threaded prop adapter, retaining set screw, spinner nut and prop washer.