1/4 x 17 inch flex shaft. Has 1/4 stub shaft welded on.
Stub shaft is 4-1/2 inches long. The end is turned down for 3/16 props and threaded 10-32. Requires a 3/16 drive dog (our 3547)
10-32 threads.
Overall length about 17 inches.
Ready to be cut to size.