Subject: Re: 4 lug socket for changing gear box, rear end oil on Invicta (Meadows 4.5l)
Wow, that must have been tight! I just use a short flat steel bar edgeways for loosening / tightening the similar item on the G10 gearbox and Lagonda rear axle. It doesn't need to be tight as it isn't holding anything. Just tight enough to be sure it won't self-unscrew.
Laurence