Spanner Nut Wrench for Mercruiser
Replaces Mercruiser part number 91-17256.
This brand new wrench is used to install or remove the driveshaft bearing retainer nut (also known as the "Spanner Nut").
Can be used for For Mercuirer #1, R, MR, Alpha One, Alpha Gen II, Bravo and Blackhawk drives.