This is our new Signature Bravo III Propeller Wrench.  It is proudly made in the AMERICA in our own investment foundry.  It is cast out of stainless steel.  The small end (1 7/16 inches  or 36.5125 MM) is made so shaft with zincs can go through the wrench. On the big end ( 2 3/4 inches or 69.86MM) just tighten it good. (This wrench is "Hell for Stout".)   I've never had a propeller fall off from being too tight.  I can't say that about too loose of a propeller.  Life Time GUARANTEE!  This wrench works on both three and four blade propellers.  Hill Marine Part Number:  B3W

People love these as they look great just being in your boat!